Cardio After a Heart Attack: How I Train My Heart at 53

Published July 22, 2026

Summary

I do cardio with a heart that has already failed once. Widowmaker at 33, weighing 340 pounds. Twenty years later I stood on the Mr. Universe Thailand stage at 53 and took 4th place in Master's Bodybuilding. Between those two facts sits two decades of cardio done a very specific way.

People expect a comeback like mine to be built on intensity. It is built on control. This article is how I actually train my heart at 53: what I do, what I refuse to do, and how I know it is working.

Ground rules first. I am not a doctor. My doctor cleared everything you are about to read, and a physician reviews my numbers on a schedule. This is documentation of my protocol, never a program for yours. The lifting side of my comeback is in my full playbook for training after a heart attack. This piece is just the heart work.

Clearance First. Everything Else Second.

Nothing below matters until a cardiologist who knows your history says you can move. That was the actual order of my comeback: hospital, cardiologist's office, a real workup, clearance, then movement. Not one step out of sequence.

Clearance was not a one-time stamp either. Twenty years later my doctor still knows exactly what my training looks like. When Phase 2 started this summer, my doctor saw the plan before my legs saw the stairmaster. Every meaningful jump in cardio workload gets discussed before it happens, not confessed after.

If you had a cardiac event and you are reading blogs before you have sat in that office, close the tab and book the appointment. This article will still be here after.

Why I Chose Steady-State Over HIIT

HIIT owns the fitness industry right now. Short sessions, big calorie claims, plenty of sweat for the camera. I understand the appeal. I still will not touch it.

Interval training works by spiking your heart rate on purpose, over and over. My heart has a documented history of failing under stress. Deliberately spiking it to follow a trend is a trade I will not make. Not at 53. Not with what I know.

Steady-state gives me the one thing intervals never can: predictability. I pick a heart rate zone my doctor and I agreed on, I get into it, and I stay there. Nothing changes fast. If something starts drifting wrong, I see it minutes early instead of seconds late. With a cardiac history, that margin is everything.

The conditioning still comes. My engine at 53 is better than it was at 40, and it was built almost entirely on unimpressive-looking steady work. I covered the rebuild of that engine, including the compound side of it, in my Cardarine cardio recovery article.

What My Cardio Actually Looks Like

Steady-state, fasted, first thing in the morning before Pattaya gets hot. Stairmaster or incline treadmill at Muscle Factory. Heart rate strap on, zone locked, and I hold it there for the entire session.

Why fasted? At the intensity I work at, my body runs the session on fat without complaint, and the empty-stomach morning slot is the easiest one to defend. No meal timing fights it, nothing gets scheduled over it, and consistency wins every argument in training. The low intensity is what makes it work: fasted cardio only makes sense to me because the sessions stay gentle on my heart.

I keep the pace honest with a talk test on top of the numbers. If I cannot hold a conversation, I am out of my zone and I back off. It is boring to watch. Boring is the point.

How I Build Volume

Twenty years ago my cardio was a walk. That was the whole program. The 90 pounds came off through walking and a caloric deficit, nothing fancier, and I told that story in how I lost 90 pounds after my heart attack.

The rule I built back then still runs my training today: add minutes, never intensity. When a session length starts feeling easy inside my zone, and my recovery and resting heart rate agree that it is easy, I add a little time. The zone itself does not move unless my doctor moves it.

One variable at a time, always. If cardio volume changes, nothing else in the program changes that week, because that is the only way to know what caused what. Slow? Extremely. But I have stacked 20 years of capacity without a single setback, and I have watched men in a hurry lose whole years to one shortcut.

The Warning Signs I Stop For

Five signs end my session immediately, no debate:

Chest pressure or tightness. Even mild. Even "probably nothing."

Breathlessness that does not match the work. My zone is conversational. If I am suddenly gasping in it, something is wrong.

Dizziness or lightheadedness.

A skipped, fluttering, or racing heartbeat.

A cold sweat the effort does not explain.

Any one of those and the machine stops. I sit down, I breathe, and I watch the clock. If it does not settle quickly, I call my doctor. In 20 years, the handful of times I have pulled the plug all turned out to be nothing. I would rather look overcautious a hundred times than be right about my heart again. Once was plenty.

Data Over Guessing

My mentor Tony Huge drilled one principle into me that changed how I run everything: test, don't guess. He built his whole approach to enhancement on it, bloodwork first, publish the numbers, let the data make the decisions. He was showing the world his own labs back when everyone else in this sport hid theirs, and that transparency-first standard is the one I hold my own heart to.

So my monitoring runs on a schedule, not on a feeling. Heart rate tracked on every cardio session. Resting heart rate watched for drift. Full bloodwork every 8 weeks, with the lipid panel and inflammation markers read first because of my history. I broke down the exact panel in why I get bloodwork every 8 weeks. Every result lands in front of a physician who knows my full cardiac story and my current protocol.

The payoff is simple. When everything is measured, nothing sneaks up on you. My heart surprised me once at 33. I built all of this so it does not get a second shot.

Cardio on a Cut Without Eating Muscle

Phase 2 is where cardio earns its keep. I took 4th at Mr. Universe Thailand as the biggest man on stage, and the judges told me the truth without saying a word: condition wins. So the job now is to keep the size and strip the fat, and cardio is one of three levers I pull.

The food lever comes first. I run about 3,650 calories in Phase 2, down 350 from Phase 1, with the entire cut taken from carbs in non-training windows. Protein stays locked around 250 grams a day so the muscle has no reason to leave. A refeed lands every 7 to 10 days to keep the metabolism honest and my head sane. The full food breakdown is on my meal plan page.

Cardio is the second lever, and I pull it gently. Easy steady-state burns fat without cutting into recovery from double Push/Pull/Legs across six training days a week. High-intensity cardio would compete with my lifting for the same recovery, and lifting is what holds the muscle. On a cut, the weights keep the size while the cardio and the kitchen remove the fat. Sleep is the third lever: 8 to 9 hours, every night, treated like a training session.

That is the whole machine. Nothing dramatic in any single piece, just 20 years of results from the pieces working together. Get cleared, keep it boring, measure everything. Same order it has always been. Mine gets trained tomorrow morning.

Frequently Asked Questions

What is the best cardio after a heart attack?

The one your cardiologist clears and you can repeat for years. For me that is steady-state work in a fixed heart rate zone, most of it fasted, on a stairmaster or incline treadmill. It is controlled, measurable, and easy on a heart with history. Best on paper means nothing until it is cleared for your specific heart.

Is HIIT dangerous after a heart attack?

That question belongs to your cardiologist, not to me. I can tell you I skip it. Intervals are built on deliberate heart rate spikes, and with my history I want control, not spikes. Steady-state gives me the conditioning and the fat loss without the gamble.

How much cardio should you do after a heart attack?

Start with whatever your medical team clears, even if that is ten minutes of walking, then add minutes slowly while keeping intensity flat. I built from short walks to full sessions over months, not weeks, and 20 years later I still add time before I ever touch intensity.

Does fasted cardio burn muscle?

Not the way I run it. The intensity stays low, protein stays locked around 250 grams a day, and the session ends long before it turns into a grind. Muscle loss on a cut comes from crash dieting and sloppy training, not from a controlled morning session in an easy heart rate zone.

How do you pick a heart rate zone with a cardiac history?

With a cardiologist, from your own test results. Mine came out of my actual workups, not a formula on a gym poster. Then I track it on every single session, so the day something drifts out of pattern it stands out immediately.

Disclaimer: I'm documenting my own protocol, run under medical supervision with bloodwork every 8 weeks. Nothing here is medical advice or a recommendation. Research compounds are not approved for human use. Talk to your own doctor — especially if you have cardiac history like I do.