7 Best Exercises to Strengthen Your Heart and Boost Your Stamina

Getting started is often the hardest part. There are so many workouts and so much advice that it can be hard to know where to begin, or whether it will even make a difference. The reassuring truth is that a strong heart does not require a perfect plan, a gym membership or any special talent. It starts with movement, almost any movement, done a little at a time. Heart disease remains the leading cause of death in the United States, according to American Heart Association (AHA), yet one of its strongest defenses is also one of the simplest. Regular cardio lowers blood pressure, steadies blood sugar and builds a stronger heart. A short daily walk is enough to begin, and the real reward is what happens on the inside.

“The conditioning, both the heart and the lungs and the whole cardiovascular respiratory system, is just building reserve, basically to where your heart can handle stress better,” said Mark Peterman, M.D., a cardiologist on the medical staff of Texas Health Plano. “If a stressful event occurs, your heart is ready to take it on.”

That reserve shows up when it matters most. “When we see people with heart attacks, the young patients always recover better,” Dr. Peterman said. “They're usually in better shape. They're stronger. Their hearts bounce back better.”

What is cardiovascular health and what does it mean for good health?

Cardiovascular health describes how well the heart, lungs and blood vessels work together to move oxygen during sustained effort. Strengthening it does not require any single activity, just movement that raises the heart rate into a healthy range and holds it there.

Understanding the heart's function

The heart is a muscle, and like any muscle it grows stronger when it is asked to work.

“There's not a particular type,” Dr. Peterman said. “The recommendation is 30 minutes, five days a week of cardio. It could be walking, stair climbing, elliptical, swimming, cycling, any number of things that just get your heart rate into a healthy range.”

For most people, that range, according to AHA, sits between 120 and 140 beats per minute, roughly 70 to 80 percent of the maximum predicted for their age. “Getting in that range and maintaining it there for 20 to 30 minutes while you're working out is really the best thing for your heart,” Dr. Peterman said.

Key indicators of a healthy heart

A stronger heart shows up in small, noticeable ways: a lower resting heart rate over time, a pulse that settles quickly after climbing stairs, less breathlessness during daily tasks, and steadier energy through the day. Those changes arrive sooner than most people expect.

Someone who is sedentary, meaning they sit most of the day and rarely exercise, often notices a difference within a month or so. “Within four to six weeks, you're seeing benefit of getting on a regular exercise program,” Dr. Peterman said. For anyone badly out of shape, Dr. Peterman suggests starting small. “I suggest they start with like 10 minutes twice a day of walking or cycling or whatever they feel like they can do.”

7 best exercises to strengthen your heart

These are among the best cardio exercises for building heart strength, and while the 5 best exercises to strengthen your heart form the core of any plan, two more are worth adding. Each one lifts the heart rate and can be ongoing, and most people can find at least one that fits their body and their schedule.

1. Brisk walking

Benefits of brisk walking: Walking is free, gentle on the joints and backed by decades of research linking it to lower blood pressure and reduced cardiac risk. It asks nothing but a pair of shoes, which makes it the easiest of all cardio workouts to start and to keep.

How to incorporate it into your routine: The goal is a purposeful pace, brisk enough to lift the heart rate rather than a stroll. A walk fits neatly into a lunch break, a phone call or an evening loop around the block. Three shorter walks across a day add up, though one continuous session does a little more for the heart.

2. Cycling

Why cycling is great for heart health: Cycling builds the large muscles of the legs while protecting the knees and hips, which makes it one of the best options for anyone whose joints have kept them inactive.

“A lot of times people become sedentary because of chronic joint pain, and cycling or swimming is often the most joint-preserving way to get cardio,” Dr. Peterman said. “A bicycle is usually the best way to get the weight off your joints by sitting, but still be able to get cardio by pedaling continuously. Stationary bikes are fairly inexpensive compared to other exercise equipment.”

Tips for a cardio session at home: A stationary bike makes a dependable cardio session at home, free from weather and traffic. Turn up the tension setting so the legs feel worked by the five-minute mark, since pedaling with no effort does not challenge the heart. Even the small pedal units that tuck under a desk count as cardio at home. “That's better than nothing,” Dr. Peterman said. “For a lot of people who don't have the space or the option for a full-size bike, the little pedal unit you can tuck under a table is a good compromise.”

3. Jump rope

How jumping rope improves cardiovascular fitness: Jumping rope raises the heart rate quickly and needs almost no space, which makes it a genuinely effective workout for the right person. The right person tends to be younger. “For younger people who are interested, it's excellent exercise,” Dr. Peterman said. “It's just not common in the age group of people I see day to day.”

A beginner's guide to jump rope: The impact is significant and repetitive, so beginners should ease in. A rope is the right length when, standing on its middle, the handles reach up to about the armpits. Start with intervals of 20 to 30 seconds, rest fully between them, land softly on a cushioned surface such as a gym mat rather than concrete, and wear supportive shoes.

A word of caution: Jump rope is not recommended for older adults or for anyone with balance issues, since the continuous impact is hard on aging joints and the risk of a fall is real. Those who want a similar heart-rate boost with far less risk are better served by cycling, swimming or a brisk walk.

4. Swimming

Why swimming strengthens the heart: Swimming works the whole body while removing nearly all stress on the joints, which makes it a strong choice for people with arthritis or extra weight to carry. Dr. Peterman named it, alongside cycling, as one of the most joint-preserving ways to get cardio. The main limitation is practical, since year-round pool access is not available everywhere. Where a pool is within reach, it is one of the gentlest ways to get real cardio.

5. Dancing

The joy of dancing for cardiovascular health: Dancing raises the heart rate, sharpens balance and, for many people, is the one form of exercise they will keep doing.

“Dancing is really good,” Dr. Peterman said. “Dance can be extremely cardio intense, and people who get into that and can do it consistently get really good exercise. You're getting a lot of good body movement and strengthening and balance that are beneficial.”

It carries a second benefit that rarely appears in a fitness article. Group classes and partner dancing pull people out of isolation, and that protects the heart too. “There's tremendous need for social connection in older adults,” Dr. Peterman said. “Anything that gets them out and connects them with other people improves their mental outlook, and that goes strongly toward their heart health. The depression that comes from isolation definitely has adverse effects on cardiac health.”

Different dance styles that are effective: Dance aerobics, line dancing, salsa, swing and ballroom all keep the heart rate elevated for a sustained stretch. Free online routines make cardio aerobics at home simple for anyone who would rather start in the living room, and many community centers offer low-cost classes for those who want the group setting.

6. High-intensity interval training (HIIT)

Why HIIT is effective for heart strength: HIIT alternates short bursts of hard effort with periods of easy recovery. Pushing the heart toward its upper range and then letting it settle can improve fitness in less total time, which is part of why the format has grown so popular. It fits neatly into a home cardio program, since a full session takes only about 20 minutes and needs no equipment.

Sample HIIT moves for your home cardio program: After a five-minute warm-up, alternate 30 seconds of hard effort with 90 seconds of easy movement, repeated six times, then cool down. The hard intervals can be fast marching, step-ups on a bottom stair, modified jumping jacks or briskly standing up and sitting down from a sturdy chair. Two sessions a week is plenty, and never on back-to-back days, since the recovery is part of the training.

A word of balance from Dr. Peterman: for steady heart conditioning, continuous exercise still has the edge. “You want that to be continuous as best you can,” he said. “When you break it up, there is a little bit of benefit that's lost. But the ideal is continuous 30 minutes.” HIIT is a useful tool, not a replacement for regular sustained cardio, and anyone with a known heart condition or uncontrolled blood pressure should clear it with a physician first.

7. Pickleball (just for fun)

A workout that does not feel like one: Not every heart-strengthening activity has to be a formal routine. Pickleball has become one of the most popular ways for people to move, and it earns a spot here because it is actually good for the heart while being genuinely fun.

“Pickleball typically gets people's heart rates up, and it's engaging, and it allows people not to be too overstressed,” Dr. Peterman said. “I have a lot of patients in their 70s and 80s who use pickleball as their exercise. They are getting their heart rate up, and it's definitely better than sitting on the couch.”

The catch is that intensity varies with how a person plays. “There's different intensities of pickleball,” Dr. Peterman said. “I play with my teenagers and I get my heart rate up a lot, and then see other people just standing in one place, not really moving, and that's not the same thing.” As with any racket sport, the quick starts and stops can lead to injuries, so a warm-up and good court shoes are worth the trouble. Played with real movement, it delivers cardio and social connection at once.

Designing your home cardio program and creating a balanced workout plan

The target is 30 minutes of nonstop activity, five days a week. That word, nonstop, is what matters, and it is where Dr. Peterman corrects a common misunderstanding.

“One of the things I encounter frequently is patients saying, ‘oh, I'm on my feet all day at work, I get 8,000 steps in, so I don't need to exercise,’” he said. “Getting up and down or walking from point to point during a work day is not the same as continuous exercise that doesn’t stop during the 30-minute timeframe. Those little spurts and then rest don't condition your heart the way sustained exercise does.”

Breaking a session into pieces still helps a busy schedule, with a small tradeoff. “You want that to be continuous as best you can,” Dr. Peterman said. “When you break it up, there is a little bit of benefit that's lost. But the ideal is continuous 30 minutes.” A home cardio program built on that principle, with most sessions unbroken and a rest day or two each week, does the most for the heart.

A complete home cardio program also leaves room for light strength work. “Typical strength training with lighter weights, doing multiple reps and breathing through it, not trying to push up a maximal load, is generally very healthy,” Dr. Peterman said. It's good for the joints and the bones, and it helps prevent osteoporosis, a condition that makes bones weak and easy to break. He cautions that heavy, straining lifts can spike blood pressure and are risky for anyone with high blood pressure or an aneurysm.

Two more important tips: To judge effort without a monitor, use the talk test, meaning if talking is too hard, the pace is too intense. And to stay hydrated, aim for six to eight glasses of water a day, with electrolytes added when exercising in the heat.

Resources for cardio aerobics at home

No equipment is required to begin. Free video libraries offer guided cardio aerobics at home for every level, from low-impact routines to dance workouts, and a pair of light dumbbells or a resistance band covers the strength side. Community centers, senior centers and hospital wellness programs add structure and social connection for anyone who would rather follow along than build a plan alone.

Safety and when to stop

Most people are safe to start, but certain symptoms during exercise call for stopping and getting checked. “The big three are chest pain, shortness of breath and dizziness,” Dr. Peterman said. “Those should prompt caution, especially when they occur at levels you could previously perform without difficulty.” Chest pain that comes with exertion, or physical effort, and eases with rest deserves particular attention. “That's a very classic symptom of an artery blockage,” Dr. Peterman said. “If it's persisting, you definitely need to call 911.”

As for overdoing it, the risk sits far out at the extremes. “There is data that marathon-type running causes heart damage and scarring over time,” Dr. Peterman said. “But I don't think walking three hours a day is going to hurt anybody.” For the average adult, the danger is doing too little, not too much.

Start your cardio journey today

A long gap since the last workout is not a reason to skip the next one.

“You can always get started,” Dr. Peterman said. “Most people realize they were missing out when they start doing it. Their body feels better, they get tension and stress out of their system, and they feel re-energized.”

The benefits reach past the heart. “You sleep better after you've worked out, and there's good data for that,” Dr. Peterman said. “It's more restful sleep, and you fall asleep more easily.”

A 10-minute walk is a real starting point, and the best cardio exercises are simply the ones a person will do again tomorrow. Texas Health can help with the next step, including a free online heart health assessment and a referral to a cardiologist close to home. Find one today at texashealth.org/Doctors.

Heart-Smart Cardio at a Glance

The goal: 30 minutes of continuous cardio, five days a week. Continuous is the word that matters. Steps racked up around a busy workday do not condition the heart the same way.

The target zone: A heart rate of 120 to 140 beats per minute, roughly 70 to 80 percent of the age-based maximum, held for 20 to 30 minutes.

What to expect: Noticeable benefit within four to six weeks. Anyone badly out of shape can begin with 10 minutes twice a day.

Know when to stop: The big three warning signs are chest pain, shortness of breath and dizziness. Chest pain that comes with exertion and eases with rest is a classic sign of an artery blockage. If it persists, call 911.