If you want a stronger heart as you age, you need to exercise it. Here’s what I recommend—and you don’t have to become a runner to do it.
When people ask me, “What is the best exercise for my heart?” they are usually expecting one answer.
Walking? Cycling? Swimming? Running?
My answer is a little different:
The best exercise for your heart is the exercise that raises your heart rate, challenges your cardiovascular system, and that you can safely keep doing week after week.
And after 50, that matters more than ever.
Your heart is a muscle. Like the other muscles in your body, it responds to the demands you place on it. Give it an appropriate challenge, allow it to recover, and over time it becomes better at doing its job.
The good news? You don’t need to run marathons or spend hours on a treadmill.
Let’s talk about what your heart really needs.
Your Heart Needs More Than a Leisurely Stroll
Let me start by saying something important:
Walking is excellent exercise.
It’s accessible, inexpensive, easy on the joints, and associated with numerous health benefits. If you’ve been sedentary, simply beginning a regular walking program can be a major step forward.
But there’s a difference between being physically active and training your cardiovascular system.
A leisurely walk around the neighborhood is certainly better than sitting on the couch. But if you can walk for 30 minutes without your breathing or heart rate changing very much, your heart isn’t being challenged significantly.
To improve cardiovascular fitness, you generally need periods when your heart has to work harder.
Think of it this way: If you always lift the same very light dumbbell, eventually it stops challenging your muscles. Your heart isn’t much different.
Dr. Mike’s Take: Walking is a terrific starting point, but don’t be afraid to occasionally pick up the pace. Your heart benefits from being challenged.
So What Is the Best Cardio Exercise?
There isn’t one. That’s actually good news because it means you have choices.
Excellent cardiovascular exercises include:
- Brisk walking
- Cycling
- Swimming
- Rowing
- Elliptical training
- Hiking
- Dancing
- Water aerobics
- Stair climbing
The activity matters less than what it makes your cardiovascular system do.
Ideally, during some of your exercise, you should notice that: Your heart is beating faster. You’re breathing harder. You’re warm and perhaps sweating a little. You can still speak, but carrying on a long conversation takes some effort.
That’s roughly what moderate-intensity cardiovascular exercise feels like for many people.
The Talk Test Makes This Simple
You don’t necessarily need a smartwatch or complicated heart-rate calculations to know whether you’re working hard enough.
Try the talk test.
During moderate exercise, you should generally be able to talk, but you probably wouldn’t want to sing a song.
At vigorous intensity, you may only be able to say a few words before needing another breath.
This gives you an easy way to adjust your workout.
Too easy? Speed up, increase resistance, climb a hill, or add an incline. Too difficult? Slow down.
Your body gives you plenty of information if you learn to listen to it.
Don’t Forget About Intervals
If you’re already exercising regularly and your doctor hasn’t given you a reason to avoid vigorous exercise, intervals can be a very efficient way to improve cardiovascular fitness.
And intervals don’t have to mean collapsing on the floor after a workout.
Here’s a simple example on a stationary bicycle:
Warm up for about 5 minutes.
Then:
Pedal harder for 1 minute.
Recover at an easy pace for 2 minutes.
Repeat that 4–6 times.
Then cool down.
You can do something similar while walking.
Walk comfortably for several minutes, then walk quickly for 30–60 seconds. Recover, then repeat.
As your fitness improves, you can gradually make the harder periods longer or slightly more challenging.
Remember This: An interval simply means alternating harder work with easier recovery. You don’t have to exercise at maximum effort to benefit.
What About Strength Training?
Here’s where people sometimes get confused.
Strength training isn’t traditionally considered “cardio,” but I still consider it an important part of a heart-healthy exercise program after 50.
Why? Because your heart doesn’t live in isolation.
Maintaining muscle helps you remain active. It helps preserve function and independence. Regular resistance training can also contribute to improvements in several cardiovascular risk factors.
And as we age, muscle becomes increasingly valuable.
I generally recommend that adults include strength training at least two days per week, working the major muscle groups.
You don’t need to become a bodybuilder.
Squats or sit-to-stands, rows, presses, carries, step-ups, and similar exercises can go a long way toward maintaining a strong, capable body.
How Much Cardio Should You Do?
A useful target for most adults is at least:
150 minutes of moderate-intensity aerobic exercise each week
or
75 minutes of vigorous aerobic exercise
or some combination of the two.
That might sound like a lot.
But break it down.
Thirty minutes of brisk walking five days per week gets you to 150 minutes.
And you don’t necessarily have to do all 30 minutes at once.
More importantly, don’t let the number discourage you if you’re currently doing very little. If you’re exercising zero minutes per week, your first goal doesn’t need to be 150. Start with 10 minutes. Then 15. Then 20.
The biggest improvement may come from simply going from doing nothing to doing something.
Don’t Ignore Your VO2 Max
There is another number I’d like you to know about: VO2 max.
In simple terms, VO2 max reflects how effectively your body can take in oxygen and use it during exercise.
You can think of it as one measure of your cardiovascular fitness.
And cardiovascular fitness matters tremendously as we age.
You don’t necessarily need laboratory testing to begin improving it. Many fitness watches estimate VO2 max, although these estimates aren’t perfect.
More importantly, you can improve cardiovascular fitness by regularly challenging your heart and lungs.
That’s another reason I like incorporating some faster walking, hills, cycling intervals, rowing, or other moderately challenging exercise instead of always exercising at exactly the same easy pace.
What If You Haven’t Exercised in Years?
Then don’t start with intervals. Start with consistency. Walk for 10 minutes. Ride a stationary bicycle. Try water aerobics. Use an elliptical.
Pick something that feels comfortable enough that you’ll actually do it again tomorrow or the next day.
After several weeks, you can begin adding small challenges. Maybe you walk faster for 30 seconds. Maybe you climb one hill. Maybe you increase the resistance on your bike.
Fitness is built gradually.
You don’t need to prove anything on your first workout.
When Should You Talk With Your Doctor?
Most people benefit from becoming more physically active, but some people should get medical guidance before significantly increasing exercise intensity.
Talk with your healthcare professional if you have known heart disease, significant lung disease, unexplained shortness of breath, chest discomfort, fainting, or other concerning symptoms.
And if you develop chest pressure, unusual shortness of breath, dizziness, fainting, or other significant symptoms while exercising, stop and seek appropriate medical evaluation.
Exercise is medicine—but just like medicine, the right dose matters.
The Bottom Line
There isn’t one “best” exercise for your heart after 50.
The best program combines regular aerobic exercise, occasional harder efforts when appropriate, strength training, and plenty of movement throughout the day.
Start where you are.
Walk briskly. Ride a bike. Swim. Dance. Row. Hike.
Choose something you enjoy enough to keep doing.
Then, as your fitness improves, occasionally challenge yourself a little more.
Because your heart may be getting older.
But that doesn’t mean it can’t get fitter.
Dr. Mike’s Prescription
Most days: Move your body.
3–5 days per week: Do some form of aerobic exercise.
2 days per week: Strength train your major muscle groups.
If you’re already fit enough: Add short periods of higher-intensity exercise once or twice a week.
And remember—the best workout isn’t the one that looks impressive on social media.
It’s the one you’ll still be doing six months from now.
This article is for educational purposes and is not a substitute for medical advice. If you have heart disease, significant medical conditions, or concerning symptoms, talk with your healthcare professional about the type and intensity of exercise that’s appropriate for you.