Clinician Heal Thyself
A CardioAdvocate Phenotype
Clinician, Heal Thyself
Burnout, Myokines, and Why the Clinician Who Lifts Delivers Better Medicine
A note to the reader: This article is written through a clinical lens—physicians, nurses, and advanced practice providers are the cases we present and the data we cite. But the science here is not limited to healthcare professionals. If you are a traveling salesman living out of hotels, an airline pilot crossing time zones, a lawyer billing 70-hour weeks, someone working multiple jobs to make ends meet, or a single parent with no time left for yourself—the circadian disruption, chronic stress, poor food environments, and exercise deficits described in this article apply to you too. The myokines do not care what your occupation is. Muscle does not check your credentials before it signals. Read on.
Case Presentation
Dr. Sarah Chen is a 42-year-old internist working in a busy urban practice. She sees 22 patients a day, documents until 10 PM, and hasn't exercised consistently in three years. Her BMI is 31. Her hemoglobin A1c is 5.9%—prediabetic. She counsels patients on diet and exercise daily. She knows the guidelines by heart. She has not applied them to herself since residency.
Down the hall, Marcus Williams, RN, BSN, works the cardiac step-down unit—three 12-hour night shifts per week, rotating to days every other month. He snacks from the vending machine at 3 AM because the cafeteria is closed. He has gained 35 pounds in seven years of night shift. His triglycerides are 240 mg/dL, his HDL is 33 mg/dL. He has never had his ApoB checked. When he raises his weight with his own physician, the response is the same advice he gives patients: "Try to eat better and get some exercise." He laughs. When?
Jessica Torres, PA-C, runs the cardiology clinic's heart failure program. She manages 14-hour days coordinating care for patients with HFpEF, titrating diuretics, and adjusting GLP-1 agonists. She skips lunch most days. She developed insomnia two years ago and self-treats with melatonin and wine. Her resting heart rate has climbed from 68 to 82 bpm. She noticed but hasn't mentioned it to anyone. She is the caregiver. She doesn't have time to be the patient.
And then there is the cardiologist who saw it in himself. At 44, after two deployments, a decade of long clinic days, and years of telling patients to exercise while doing the bare minimum himself, he recognized the pattern. He was not obese. He was not sick. But he was drifting—moderately active, mostly cardio, no structure, no accountability, and burning out. So he started. He bought a half rack and free weights and began lifting—heavy compound movements, 2–3 days a week—alongside varied cardio: a spin bike, a rowing machine, mountain biking, occasional running. He and his wife gradually added more equipment during and after COVID. It was real training, not token exercise. But it was still largely solitary, self-programmed, and missing the structure and accountability that separates a habit from a practice. Five years later, he joined a HIIT class—partly for the workout, partly because he needed other people in the room to make him show up. He had read the data: the Copenhagen City Heart Study, following 8,577 participants over 25 years, found that tennis added 9.7 years of life expectancy compared to sedentary controls—three times more than jogging (3.2 years) and six times more than solo health club activities (1.5 years). Badminton added 6.2 years. Soccer, 4.7. The pattern was unmistakable: sports with inherent social interaction produced the greatest longevity gains. As cardiologist James O'Keefe of Saint Luke's Mid America Heart Institute has emphasized, the social dimension of exercise may be as cardioprotective as the exercise itself. A HIIT class is not tennis. But the principle is the same: other people in the room change the biology, not just the adherence. A year after that, he added a Tonal resistance training machine at home and enrolled in a structured 12-week challenge. He had been lifting for years, but Tonal added what his garage gym could not: coached programming, precise progressive overload tracking, and a community challenge with a deadline. That combination—heavy free weights for foundation, machine-guided programming for structure—was when he started paying attention to what myokines were—because a personal trainer's offhand comment about calves and brains sent him down a PubMed rabbit hole he had never thought to explore. That cardiologist is the author of this article.
These four clinicians represent a phenotype that cardiology has been slow to recognize: the healthcare professional whose own cardiometabolic risk is accelerating precisely because of the profession that trained them to prevent it in others. Three of them are still in the vicious cycle. One decided to break it. The question this article poses is not whether clinicians should prioritize their own health—the data on that are unambiguous. The question is whether you will.
Flying Under the Radar
Flying Under the Radar
The paradox hiding in plain sight.
Healthcare professionals spend their careers telling patients to exercise, eat well, sleep enough, and manage stress. They cite the guidelines. They print handouts. They refer to nutritionists and cardiac rehabilitation programs. And then they walk back to a break room with stale coffee and a vending machine, sit down for seven more hours of charting, and drive home too exhausted to do anything but collapse.
This is not hypocrisy. It is a system-level failure—a workplace environment that makes healthy behavior structurally impossible for the very people tasked with prescribing it.
The data are striking. Among nurses—the largest healthcare workforce in the United States—80% working in hospital settings are overweight or obese, compared to approximately 60% in matched controls. Night shift work, which affects millions of nurses, increases coronary heart disease risk by 12–18% after just 5–10 years of exposure, according to the Nurses' Health Study's 22-year follow-up. Rotating shifts increase metabolic syndrome risk by 57%. The night shift nurse eating from a vending machine at 3 AM is not lazy—she is trapped in a circadian environment that drives insulin resistance, suppresses leptin signaling, and promotes visceral fat deposition.
Among physicians, the picture is different in mechanism but identical in outcome. If you have watched The Pitt—the HBO series following an emergency physician through a single 15-hour shift—you have seen a dramatized version of what burnout looks like from the inside: the relentless pace, the moral injury, the impossibility of self-care when the next patient is already waiting. The show resonates because it is not far from the truth. Burnout—now affecting 47–63% of physicians depending on the survey—is not merely psychological. It is a physiological state characterized by chronic cortisol elevation, sympathetic overdrive, sleep fragmentation, and inflammatory activation. Burned-out physicians exercise less, eat worse, sleep poorly, and die earlier. They also counsel patients on lifestyle less frequently, less confidently, and less effectively. The system does not have to drag you into the Pitt. But if you are not deliberate about protecting your own health, it will.
The result is a feedback loop: unhealthy clinicians provide weaker prevention counseling, producing less healthy patients, increasing clinical burden, worsening clinician health further. The healer's own disease becomes the patient's missed opportunity.
The Checklists
Clinician, Look in the Mirror: A Self-Assessment
Before you write another exercise prescription for a patient, answer these honestly for yourself.
The Numbers: Minimum Effective Dose
Once you have looked in the mirror, here are the evidence-based targets.
ACC.26 Data — When You Exercise May Matter Too. A study of 14,489 participants presented at the American College of Cardiology’s 2026 Annual Scientific Session found that early morning exercisers (7–8 AM) had 31% lower odds of coronary artery disease, 30% lower odds of type 2 diabetes, and 35% lower odds of obesity compared to those who exercised later in the day. The mechanism may involve enhanced circadian metabolic alignment—morning exercise synchronizes cortisol rhythms, improves insulin sensitivity in the subsequent feeding window, and optimizes fat oxidation during the hours that follow. For the clinician debating whether to set the alarm earlier: the data increasingly say yes.
Prescription Dose Tiers — A Quick Reference
| Level | What to Do | Why |
|---|---|---|
| Minimum Effective Dose | Resistance training ≥2 days/week, 30 min/session + 150 min/week moderate aerobic | HHS Physical Activity Guidelines baseline; achieves the majority of the mortality benefit |
| Optimal Target | 3 days resistance + 2–3 days aerobic (separate or combined sessions) | Combined training reduces mortality by ~40% (Momma et al., 2022)—greater than either modality alone |
| Practical Reality | Any progressive resistance—machines, free weights, cables, bodyweight, bands—plus whatever cardio you will actually do | The best resistance training is the one you do consistently. 30–60 min/week of strength work captures the majority of the benefit |
| “I Have No Time” | 2 days/week, 20–30 min/session. Compound movements only (squat, deadlift, row, press) | The dose-response curve flattens quickly; even minimal resistance training beats none by 10–17% mortality reduction |
Patient Counseling Checklist: What to Prescribe (Not Just Suggest)
The Deep Dive
Section 1: The Scope of the Problem—By the Numbers
Before examining solutions, we need to understand the scale of clinician cardiometabolic risk. The data come from multiple sources and paint a consistent picture across professions.
Nurses
The nursing workforce—over 4.7 million strong in the United States—faces a unique constellation of occupational risk factors. A 2023 systematic review of 83 studies across 29 countries found that 31.2% of nurses are overweight and 16.3% are obese. In hospital settings specifically, central obesity affects 82% of nurses compared to 68% of matched controls. These are not statistics about a sedentary population—many nurses walk 4–6 miles per shift. The weight gain is driven by circadian disruption, stress eating, and the metabolic consequences of shift work—not insufficient physical activity alone.
The Nurses' Health Study, one of the largest and longest-running prospective cohort studies in medical history, has tracked over 280,000 nurses since 1976. Its shift work findings are sobering. After controlling for age, smoking, BMI, and other confounders, nurses who worked rotating night shifts for 5–9 years had a 12% increased risk of coronary heart disease, and those with 10 or more years of night shift exposure had an 18% increase. The mechanisms are now well-characterized: circadian misalignment disrupts melatonin secretion, impairs glucose tolerance, elevates nocturnal cortisol, and shifts the autonomic balance toward sympathetic predominance—precisely the neuroendocrine profile that accelerates atherosclerosis.
Night shift nurses also show measurably lower HDL cholesterol—an average of 4.4 mg/dL lower than day-shift counterparts in studies using serial biomarker sampling. A 4 mg/dL HDL reduction may sound modest, but in the context of already-low HDL (which is common in metabolic syndrome), it amplifies atherogenic risk substantially. Combined with the 57% increased risk of metabolic syndrome from rotating shifts documented in meta-analyses, the night shift nurse is carrying a cardiometabolic burden that her own healthcare system created.
The Hospital Food Environment—A System Working Against Its Own People
If the shift schedule is the first structural barrier to clinician health, the hospital food environment is the second. And it may be the more absurd of the two, because hospitals control it directly—and choose not to fix it.
A 2024 survey of 192 U.S. medical school–affiliated hospitals found that 69% host at least one fast-food restaurant on premises—Subway, Starbucks, Chick-fil-A, McDonald's, Burger King, and others. The same institution training future physicians about cardiovascular prevention is selling them Big Macs in the lobby. In my own experience in the military, National Naval Medical Center—now Walter Reed—and other military hospitals had food courts offering McDonald's, Taco Bell, Subway, and similar chains. The message to staff and patients alike was unmistakable: we will teach you about heart disease upstairs and feed you the causes of it downstairs.
The CDC's Hospital Nutrition Environment Scan (HNES) assessed 39 Southern California hospitals and found that cafeterias scored only 29% of possible nutritional quality points, vending machines scored 33%, and gift shops scored less than 1%. The overall hospital food environment achieved just 25% of total possible points. These are institutions whose core mission is health—scoring a 25% on the food they serve their own workforce.
For the night shift nurse, it is even worse. Studies of hospital cafeteria access document that cafeterias are typically closed during night shifts, leaving vending machines as the only option—machines stocked predominantly with products high in fat, salt, and sugar. The nurse eating a candy bar at 3 AM is not making a poor choice. She is making the only choice the hospital gave her.
Even the food served to patients is part of the problem. The so-called "heart healthy" inpatient diet is often loaded with refined carbohydrates, artificial sweeteners, and preservatives—precisely the opposite of what current evidence supports. A large prospective cohort study found that higher artificial sweetener consumption is associated with a 9% increased risk of cardiovascular disease and an 18% increased risk of cerebrovascular events. The "heart healthy" tray arriving at a post-ACS patient's bedside may contain the very additives that worsen their cardiometabolic risk. Meanwhile, vendor contracts with Pepsi and Coca-Cola ensure that sugar-sweetened beverage branding is ubiquitous in hospital common areas—branded cups, vending machine wraps, cafeteria signage—normalizing the consumption of products that drive the diseases being treated floors above.
Some institutions have begun to change. The New York City Healthy Hospital Food Initiative partnered with 40 hospitals to introduce healthy value meals, remove unhealthy items from checkout areas, and increase whole grain offerings—with over 70% positive employee response. Credit where it is due: Walter Reed has since overhauled its dining operations entirely—replacing the fast-food court with Café 8901, which serves lean proteins, abundant vegetables, and whole grains with minimal processed food, available 19 hours a day. Having served there, I can tell you the contrast with what it used to be is striking. Walter Reed proved that a major medical center can feed its staff and patients well when leadership decides it matters. These examples demonstrate that institutional change is possible. But they remain the exception, not the norm.
Physicians
Physician health data tell a parallel story through a different mechanism. While shift work affects some specialties (emergency medicine, hospital medicine, surgery), the dominant driver of physician cardiometabolic risk is burnout-mediated deconditioning. Physicians who report burnout are significantly less likely to exercise regularly, more likely to have elevated BMI, and more likely to meet criteria for metabolic syndrome.
A landmark study in Obesity (Bleich et al., 2012) found that physician BMI independently predicts obesity counseling behavior. Normal-weight physicians were significantly more likely to diagnose obesity, initiate weight loss conversations, and refer patients to weight management programs compared to overweight or obese physicians. But the most striking finding was the diagnostic threshold effect: physicians recorded an obesity diagnosis 93% of the time when the patient's perceived weight met or exceeded their own—but only 7% of the time when the patient appeared lighter than them. Read that again. The physician's own body became the ruler against which the patient was measured. If you weigh more than your doctor, you get diagnosed. If you weigh less, your obesity flies under the radar—even if your BMI qualifies.
This creates a double failure. The overweight physician is neglecting their own cardiometabolic risk and systematically under-diagnosing it in their patients. Both are flying under the radar. The clinician's unaddressed health becomes a direct impediment to the patient's care—not because of incompetence, but because of an unconscious perceptual bias calibrated to the clinician's own body. This is not about shaming physicians with higher BMI. It is about recognizing that personal health status shapes clinical behavior in ways that are measurable, consequential, and largely invisible to the clinician themselves.
The AHA's 2018 Scientific Statement on physical activity in healthcare settings (Lobelo et al., Circulation) formalized what clinicians had long suspected: physicians who are personally active counsel patients on exercise more often, more confidently, and with better outcomes. The statement called for healthcare systems to promote physical activity among their own workforce—not as a perk, but as a quality improvement measure.
A 2023 prospective study in EClinicalMedicine (Čadek et al.) went further, demonstrating that patients were less likely to follow lifestyle advice, reported lower trust, and were more likely to consider changing providers when their healthcare professional appeared physically unfit. Whether we like it or not, clinicians are walking advertisements for the medicine they prescribe. The messenger matters.
Advanced Practice Providers
PAs and NPs now write nearly one-third of all retail prescriptions in the United States—over 1.17 billion unique prescriptions between 2021 and 2022. The NP workforce alone has grown to over 320,000, with 40% employment growth projected by 2034. These clinicians are increasingly the primary point of cardiovascular care for millions of Americans, particularly in underserved areas. Yet dedicated research on PA and NP cardiometabolic health is sparse—a gap that urgently needs filling. The occupational stressors (long hours, documentation burden, shift work in many settings) are analogous to those affecting physicians and nurses. The assumption that APPs are somehow immune to the same cardiometabolic pressures is unfounded.
Section 2: Your Muscles Are Talking—Are You Listening?
For decades, exercise was understood primarily through the lens of aerobic fitness: VO2 max, heart rate zones, the cardiac rehabilitation treadmill. Resistance training was relegated to gyms and bodybuilders—nice for aesthetics, irrelevant to cardiovascular medicine. That understanding was fundamentally incomplete.
How incomplete? A 2022 systematic review and meta-analysis in the British Journal of Sports Medicine (Momma et al.), pooling data from 16 studies and over 1.5 million participants, found that any amount of muscle-strengthening activity was associated with a 10–17% reduction in all-cause mortality, cardiovascular disease, cancer, and diabetes. When resistance training was combined with aerobic exercise, the mortality reduction reached approximately 40%—greater than either modality alone. The optimal dose for resistance training alone? Approximately 30–60 minutes per week—far less than most people assume. Two to three sessions of 20–30 minutes each. That is the mortality benefit. And yet resistance training remains the forgotten half of the exercise prescription in cardiology.
The question is not just whether resistance training works. It is why. And the answer began in a Copenhagen laboratory in 2000.
Bente Klarlund Pedersen's research group in Copenhagen identified something remarkable: contracting skeletal muscle releases signaling molecules into the bloodstream—cytokines and peptides that act on distant organs. They named these molecules myokines, and the discovery reframed skeletal muscle from a locomotor organ into a bona fide endocrine organ. The implications for cardiovascular medicine are profound.
The landmark 2020 review by Severinsen and Pedersen in Endocrine Reviews catalogued over 650 identified myokines—a "myokinome" that mediates crosstalk between muscle and brain, adipose tissue, bone, liver, gut, pancreas, vasculature, and immune cells. This is not a speculative concept. It is measurable, reproducible physiology with direct relevance to every patient a cardiologist sees.
The Key Myokines Cardiologists Should Know
Interleukin-6 (IL-6) is the prototypic exercise-derived myokine and illustrates why context matters in inflammation biology. In chronic disease, IL-6 is a marker of pathological inflammation. But when released acutely by contracting muscle during exercise, IL-6 functions as an anti-inflammatory signal—it drives fat oxidation, stimulates GLP-1 secretion from the gut, promotes glucose uptake through AMPK activation (a pathway entirely distinct from insulin signaling), and suppresses TNF-α and IL-1β. The same molecule that signals disease at rest signals healing during exercise. This is why measuring IL-6 without context is misleading—and why resistance training, which produces large IL-6 spikes, is particularly potent metabolically.
Irisin, derived from the FNDC5 precursor, promotes the browning of white adipose tissue—converting metabolically inert storage fat into thermogenically active brown-like fat. It improves insulin sensitivity, supports bone formation, and upregulates brain-derived neurotrophic factor (BDNF) in the hippocampus, providing a molecular mechanism for the well-documented cognitive benefits of exercise. For the clinician worried about dementia risk as they age, irisin provides a direct muscle-to-brain protective pathway.
BDNF itself, while primarily a neurotrophin, is upregulated by exercise through myokine-mediated pathways. It drives hippocampal neurogenesis, supports synaptic plasticity, and is the molecular basis for the statement that "exercise is the best antidepressant"—a claim that is no longer merely observational but mechanistically grounded.
The Brain-Calf Axis: When Gym Wisdom Meets Molecular Biology
During one of my sessions in Tonal's 12 Weeks to Unleash program, coach Joe Rodonis said something that stopped me mid-rep: "Big calves equal big brains. Someone told me that. I don't know what the science is, but it's true. It's science." He laughed. I laughed. But Joe was onto something.
The gastrocnemius and soleus—the calf muscles—are among the body's largest and most metabolically active muscle groups. During resistance training, they are prolific myokine secretors. Irisin, released from contracting muscle via FNDC5 cleavage, crosses the blood-brain barrier and upregulates BDNF expression in the hippocampus. BDNF drives neurogenesis, synaptic plasticity, and long-term memory consolidation. A 2015 study in Gerontology following 324 female twins over 10 years found that leg muscle power—driven primarily by the quadriceps and calves—was the strongest predictor of cognitive change, outperforming every other lifestyle factor measured. Greater leg strength at baseline predicted significantly less brain aging a decade later. Big calves, big brains. Joe was right. (I posted a photo on Instagram in Rodin's Thinker pose after that session, hoping it worked in reverse—that my deep thoughts might grow my calves. The jury is still out.)
This is worth pausing on. Bodybuilders and strength coaches have observed for decades that heavy leg training seems to sharpen mental clarity, improve mood, and "clear the fog." They did not know about irisin or BDNF or the myokinome. They just noticed the effect. This is not "bro medicine"—it is experiential observation preceding mechanistic validation, which is how medicine has always advanced. Clinicians who dismiss gym culture insights are making the same mistake as the physician who dismissed hand-washing before germ theory. The observation was correct. The mechanism came later.
As part of the Tonal program, I had the chance to speak with Joe about how his comment had inspired me to dig into the science behind it. We talked about how our professions learn from one another—trainers observing in their clients what cardiologists are now publishing in journals, and clinicians bringing mechanistic understanding to what coaches have long known intuitively. Two professions, different vocabularies, converging on the same truth: skeletal muscle is not just for movement. It is signaling. And the people who spend their lives loading it have been watching those signals play out long before we had the assays to measure them.
Myonectin has emerged as cardioprotective, with evidence that it protects the heart from ischemia-reperfusion injury. Musclin appears critical for exercise-induced myocardial protection and mitochondrial biogenesis in cardiac tissue. These are not peripheral findings—they suggest that the exercising skeletal muscle is directly conditioning the heart through paracrine and endocrine signaling.
Myostatin, the negative regulator of muscle hypertrophy, is suppressed by resistance training—which is precisely why resistance training builds muscle mass in a way that aerobic training alone does not. For the aging clinician, for the patient with sarcopenia, for the HFpEF patient whose functional capacity is declining, myostatin suppression through resistance training is not optional. It is medicine.
Section 3: The GLP-1 Paradox—When Weight Loss Costs You Muscle
The GLP-1 receptor agonist revolution has given cardiologists and obesity medicine specialists the most powerful pharmacotherapy for weight loss in medical history. Semaglutide achieves 10–15% weight loss; tirzepatide achieves 20–22%. The SELECT trial demonstrated a 20% reduction in MACE with semaglutide. These are practice-changing numbers.
But there is a cost that is only now being fully appreciated: lean mass loss. Data from the STEP-1 trial show approximately 9.7% of weight lost on semaglutide was lean mass. The SURMOUNT-1 data for tirzepatide indicate that roughly 25% of total weight loss is lean mass, with 75% being fat mass over 72 weeks. For a patient losing 20 kg, that means 5 kg of muscle gone.
This matters profoundly for the myokine thesis. Less muscle means fewer myokines. Fewer myokines means less anti-inflammatory signaling, less fat browning, less insulin-independent glucose disposal, less cardioprotection. A patient who loses 20% body weight on tirzepatide but loses 25% of it as lean mass may be lighter, but their myokine-secreting capacity is diminished. The metabolic benefit of the drug may be partially offset by the metabolic cost of muscle loss.
The solution is not to withhold GLP-1 agonists. The solution is to prescribe resistance training alongside them. Current evidence suggests that resistance training 3–5 times per week, combined with adequate protein intake (1.6–2.3 g/kg of fat-free mass daily), can preserve or even increase lean tissue during GLP-1 agonist therapy. Case series demonstrate that patients who combine tirzepatide with structured resistance training maintain muscle mass while achieving comparable fat loss. GLP-1 agonists and resistance training are not alternatives—they are complementary, working through entirely different metabolic pathways (GLP-1 receptor signaling versus AMPK-mediated myokine pathways).
The ACC's 2025 Concise Clinical Guidance on medical weight management now emphasizes this point: modern obesity pharmacotherapy should be paired with structured exercise, particularly resistance training, to optimize body composition outcomes. The era of "take this shot and you'll be fine" is already being revised to "take this shot, pick up some weights, and eat enough protein."
Section 4: HFpEF, Sarcopenia, and the Exercise Prescription That Cardiology Forgot
Heart failure with preserved ejection fraction (HFpEF) is the dominant heart failure phenotype of the aging, obese, comorbid population. It now accounts for more than half of all heart failure hospitalizations. And for decades, cardiology had almost nothing to offer these patients beyond diuretics and blood pressure control.
That is changing. A 2025 randomized trial published in Nature Medicine enrolled 322 HFpEF patients (mean age 70, 62% female) and randomized them to 12 months of combined endurance plus resistance training versus usual care. On the primary composite endpoint—a modified Packer score of symptoms, exercise capacity, and quality of life—20.5% of the exercise group improved compared to 8.1% of controls, though this difference did not reach statistical significance (p=0.17). However, exercise significantly improved peak VO₂ (+1.3 mL/kg/min) and NYHA functional class, and higher adherence was strongly associated with better composite outcomes (p=0.002). The signal is clear even if the composite missed its p-value: structured exercise produces clinically meaningful gains in a disease for which pharmacotherapy options remain limited.
The pharmacotherapy landscape for HFpEF is also advancing. The SUMMIT CMR substudy demonstrated that tirzepatide reduces left ventricular mass by 11 grams and paracardiac adipose tissue by 45 mL in patients with obesity-related HFpEF—structural cardiac remodeling driven by weight loss and metabolic improvement. The 2025 ACC Scientific Statement on Management of Obesity in Adults with Heart Failure now formally positions weight optimization and structured exercise as integral to HFpEF treatment, not optional add-ons. But drugs that reduce LV mass cannot rebuild the myokine-secreting organ that sarcopenia destroys. That requires resistance training.
Why does this matter for clinicians? Because sarcopenia—the age-related loss of muscle mass and function—is both a risk factor for HFpEF and a consequence of it. A meta-analysis of approximately 2.3 million participants demonstrated that sarcopenia is independently associated with elevated cardiovascular event risk. Muscle loss compounds cardiac dysfunction: fewer myokines, greater insulin resistance, higher inflammatory burden, reduced functional capacity, and a downward spiral toward frailty.
Progressive resistance training—2 to 3 sessions per week for 8 to 12 weeks as a starting program—is the most effective intervention for improving muscle mass in older adults with sarcopenic obesity. It is superior to aerobic exercise alone for muscle mass gains in this population. For the cardiologist who sees HFpEF patients daily, resistance training is not a "nice to have" rehabilitation add-on. It is the only intervention that simultaneously addresses sarcopenia, insulin resistance, myokine deficiency, and functional decline in this population.
And here is the uncomfortable corollary: if the clinician treating these patients does not understand resistance training from personal experience—does not know what progressive overload feels like, cannot explain the difference between a compound and isolation movement, has never experienced delayed-onset muscle soreness—the prescription will be vague, unconvincing, and ultimately ignored. You cannot prescribe with conviction what you do not practice.
Section 5: The Clinician in the Mirror
I am writing this section in first person because it would be dishonest not to.
I am a practicing cardiologist. I spent years in the Air Force, deployed twice to Afghanistan, and built CardioAdvocate because I believe expertise should not be gated by geography or access. I tell patients every day that prevention works—because I watched it save my own father's life after his first cardiac event at age 46, when I was fifteen years old and driving him to the hospital on a learner's permit.
But telling patients to exercise while not doing it yourself is hollow. I recognized that about seven years ago. I had been moderately active most of my life—running, skiing, occasional mountain biking—but I was not deliberate about it. So I bought a half rack and free weights and started lifting heavy—compound movements, 2–3 days a week—alongside cardio on a spin bike, rowing machine, and mountain bike. My wife and I gradually built out a home gym during and after COVID. I was training, not just exercising. But it was self-programmed, mostly solitary, and missing the structure and social accountability that I now know make the difference between a habit and a practice.
So I changed. The catalyst was watching my wife. She qualified for the Boston Marathon—a goal she had worked toward for years with discipline I admired but had not matched. She did not need me to run Boston with her. But watching her train with that kind of purpose made me realize I needed my own thing. Not a marathon. Something that fit me—that combined the resistance training I knew the science supported with the accountability I knew I needed.
I found it in Tonal's 12 Weeks to Unleash program—a structured digital resistance training challenge. I alternated Tonal strength days with a HIIT class at my gym, prioritized sleep hygiene (earlier to bed, earlier to rise), and for the first time in years, I was training with a plan instead of just "exercising when I could." My wife had Boston. I had Unleash. Not the same thing—but the same principle: a defined goal, a community, and a deadline. That is what accountability looks like in practice. Not everyone needs to run a marathon or complete a 12-week challenge. But having something—a race, a class, a program, a partner, a group—transforms exercise from a vague intention into a commitment. The clinician who says "I don't need accountability" is usually the clinician who stops exercising by February.
It was during that Tonal program that coach Joe Rodonis made his offhand remark about calves and brains—and sent me down the PubMed rabbit hole that became the myokine framework for this article. A personal trainer taught a cardiologist something. That should not surprise us. Trainers spend their careers observing what happens when people load muscle consistently. We spend ours reading about it in journals. The observations converge. If I had not been in that program, doing the work myself, I would not have heard Joe's comment, would not have chased the science, and this article would not exist in its current form. The experience shaped the evidence review. That is the point.
When I tell a 58-year-old with HFpEF that resistance training will help her heart, I can say it from experience. When I explain to a patient on tirzepatide that he needs to lift weights to preserve muscle mass, I am not reciting a guideline—I am describing something I understand because I do it. The AHA Scientific Statement was right: physicians who exercise regularly counsel patients on exercise more effectively. But the mechanism is not just confidence. It is empathy. It is knowing that the alarm at 5 AM is hard. That the last set is hard. That showing up when you are tired is hard. And that it is still worth it.
I am not suggesting every clinician needs a Tonal or a marathon-running spouse. I am suggesting that finding something—any form of progressive resistance training, any commitment to structured physical activity, any community that holds you to a standard—changes the quality of the care you deliver. Not because your patients will judge your biceps, but because you will understand the prescription from the inside. And that understanding is audible in every conversation you have.
The Bottom Line
The Bottom Line
Clinicians are a cardiometabolic risk population hiding in plain sight. Night shift nurses, burned-out physicians, overworked APPs—all face occupational exposures that drive insulin resistance, weight gain, circadian disruption, and cardiovascular disease. The system that trained them to prevent these conditions in others is the same system making them sick.
Skeletal muscle is an endocrine organ. The 650+ myokines released during resistance training mediate anti-inflammatory, cardioprotective, neuroprotective, and metabolic signaling that no pharmaceutical can fully replicate. GLP-1 agonists are transformative—but they cost lean mass. Resistance training preserves it. These are complementary prescriptions, not competing ones.
Healthy clinicians deliver better care. This is not opinion. It is documented across multiple studies: clinicians who exercise counsel patients more effectively, more frequently, and with greater credibility. Investing in your own health is not selfish. It is a professional obligation—to your patients, your family, and yourself.
The prescription is clear: Resistance training at least twice a week. Adequate protein. Prioritized sleep. Know your own numbers. Find your accountability. And when you talk to a patient about exercise, speak from experience—not just from a guideline.
Clinician, heal thyself. Your patients are watching. And they are listening.
CardioAdvocate helps people understand what matters — and how to speak up about it.
