Cardiac Rehab: Phases, Exercises, Benefits and What to Expect
Written and medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026 · How we review
Quick Answer: What is cardiac rehab?
Cardiac rehabilitation (cardiac rehab) is a supervised, multi-part program that helps people recover and get stronger after a heart attack, heart surgery or another heart issue. It combines exercise training, risk factor changes, heart health education, nutrition counseling and emotional support, and typically runs at least three months, often as 36 one-hour sessions over 12 weeks. [1]
What the research says
Fewer heart attacks and hospital stays in coronary heart disease. A review of 107 trials with 26,886 adults found that, within 6 to 12 months, exercise-based cardiac rehab lowered the risk of a heart attack by about 28% and all-cause hospital admissions by about 35% compared with no exercise program. Over longer follow-up, it was linked to fewer deaths from heart disease (Dibben et al., Cochrane Database of Systematic Reviews, 2026).
Fewer hospital admissions in heart failure. Across 44 trials with 5,783 people with heart failure, hospital admissions within a year were 16.5% with cardiac rehab versus 23.7% without it, and heart failure admissions were 7.1% versus 11.1%. Quality of life also tended to improve (Long et al., Cochrane Database of Systematic Reviews, 2019).
Home-based programs work about as well as center-based ones. In 23 trials with 2,890 participants, home-based and center-based cardiac rehab showed no clear difference in death rates, exercise capacity or quality of life up to 12 months, and slightly more people finished home-based programs (Anderson et al., Cochrane Database of Systematic Reviews, 2017).
Key takeaways
Cardiac rehab is a complete recovery program, not just exercise. It also covers diet, stress, medicines and chronic conditions.
It runs in three phases: in the hospital, at an outpatient center, and on your own for life.
A typical program is 12 weeks long, with three one-hour sessions a week (36 sessions total).
It helps people of any age or sex, whether their heart issue was minor or major.
Only 20% to 30% of eligible people enroll each year, even though it can add years to life.
You need a referral from your healthcare provider to start.
What is cardiac rehab?
Cardiac rehab is a complete program you can do after cardiac surgery or treatment for a heart issue, such as a heart attack. It helps you recover, get stronger and lower your risk of future heart problems.
A team of healthcare providers guides your personal program. This team includes exercise and nutrition experts. Most programs take at least three months.
Cardiac rehab can help you no matter your age or sex. It also helps whether your heart issue was minor or major.
What are the five main components of cardiac rehab?
Cardiac rehab combines five parts that work together. Exercise is only one of them.
Component | What it covers |
Exercise training | Supervised aerobic and strength exercises matched to your fitness level |
Risk factor changes | Managing blood pressure, cholesterol and blood sugar, and stopping tobacco use |
Heart health education | Learning about your condition and how to take and manage your medicines |
Diet and nutrition counseling | Heart-healthy eating and reaching and keeping a healthy weight |
Emotional support | Help with stress, anxiety and feelings of depression after a heart event |
What are the three phases of cardiac rehab?
Cardiac rehab has three phases. It may start before you leave the hospital and should continue for the long term.
Phase | Where it happens | What it involves |
Phase 1: Inpatient | In the hospital | Starts during your hospital stay, often with gentle walking down the hallway |
Phase 2: Outpatient | A rehab center | You attend supervised appointments, then go home afterward |
Phase 3: On your own | At home or a gym | You keep up your exercises on your own, at your own expense |
In most cases, your healthcare provider will ask you to start phase 2 shortly after you leave the hospital. Hospitals and other medical centers offer these programs.
Who needs cardiac rehab?
People who have had a heart or blood vessel problem benefit most from cardiac rehab. This includes people who have had:
A heart attack, including an NSTEMI heart attack
Heart failure
A ventricular assist device (a pump that supports the heart)
Stable angina (chest pain from reduced blood flow to the heart)
A heart or heart-lung transplant
Heart valve repair or replacement for heart valve disease
Coronary artery bypass grafting (CABG)
Coronary angioplasty, with or without a stent
Many of these conditions are linked to coronary artery disease. Your healthcare provider can give you a referral to a cardiac rehab program.
How common is cardiac rehab?
Cardiac rehab is not used as often as it should be. Each year, about 800,000 Americans have a heart attack, and for 25% of them, it is not their first one.
Cardiac rehab can help prevent a second heart attack and lower the risk of death over the one to three years after the program. Even so, only 20% to 30% of eligible people enroll each year.
Major heart organizations, including the American Heart Association and the American College of Cardiology, endorse cardiac rehab for people with the conditions listed above.
What happens before cardiac rehab starts?
Before building your plan, the rehab staff will do a brief physical exam and take your medical history. They may also ask you to have basic tests, such as:
Cardiac imaging (pictures of your heart)
An electrocardiogram (EKG) to check your heart rhythm
Blood tests for blood sugar and cholesterol
An exercise stress test on a treadmill or stationary bike
The staff then work with you and your provider to:
Review your risk factors for heart and blood vessel disease
Build a treatment plan to guide your program
Find safe and effective target training zones for exercise
Set heart-healthy goals for during the program and for the long term
What happens during a cardiac rehab session?
During a cardiac rehab session, you exercise in a group while trained staff supervise you. You start slowly and follow their instructions.
As you complete more sessions, your confidence and endurance grow. The staff gradually increase how hard or how long you exercise, based on your fitness level and medical history. They check your heart rate and blood pressure regularly to keep you safe.
What exercises do you do in cardiac rehab?
The exercises in cardiac rehab depend on your fitness level and risk factors at the start.
Exercise type | Examples |
Aerobic exercise | Walking, riding a stationary bike, using an elliptical or step trainer |
Muscle strengthening | Lifting free weights, using cable machines, using resistance bands |
Beyond exercise, cardiac rehab also helps you:
Eat heart-healthy meals
Learn how to manage stress
Reach and stay at a healthy weight
Stop using tobacco and other substances
Take and manage your medicines
Control your blood pressure, cholesterol and blood sugar
How long does cardiac rehab last?
Most cardiac rehab programs last 12 weeks, with a total of 36 sessions. That works out to three one-hour sessions a week.
Program detail | Typical amount |
Program length | 12 weeks |
Total sessions | 36 |
Sessions per week | 3 |
Length of each session | About 1 hour |
Most insurance companies, including Medicare in the United States, cover this 12-week program. Check your own coverage before you enroll.
What are the benefits of cardiac rehab?
Completing a cardiac rehab program can add up to five years to your life expectancy, according to studies. It also helps in many day-to-day ways. Cardiac rehab can:
Help you recover and get stronger after a heart attack, heart surgery or another heart issue
Get your body moving so everyday activities feel easier
Improve your daily quality of life
Lower your risk of another heart attack
Lower your risk of becoming very ill or dying from heart disease in the coming years
Help you manage depression and anxiety after a heart attack
Show you ways to ease stress
Help you manage your weight
Teach healthier habits, such as heart-healthy eating, not using tobacco, sitting less and moving more
Ease chest pain and shortness of breath
How successful is cardiac rehab?
Several studies show that cardiac rehab helps in measurable ways.
Outcome | Reported reduction with cardiac rehab |
Risk of death from heart disease | 58% |
Risk of heart attack | 30% |
Risk of stroke | 60% |
Depression symptoms | 63% |
A heart attack or other heart problem can be frightening and can leave you feeling low. Cardiac rehab treats mental health and quality of life as part of recovery, so you are not facing your goals alone. If anxiety shows up as a racing heart, our guide to heart palpitations and anxiety explains why it happens.
What are the risks of cardiac rehab?
The risks of cardiac rehab are very low. In very rare cases, exercise during rehab can cause an injury or a dangerous heart rhythm.
If this happens, the staff will stop your exercise and treat you right away. They may also contact your cardiologist or primary care provider, who may want to examine you or order more tests before you return.
Can you do cardiac rehab at home?
You may be able to do cardiac rehab at home. Check with your insurance company first to see whether it covers home-based programs.
Phase 1 always takes place in the hospital. After that, your provider will usually ask you to start an outpatient program soon after you go home.
How do you choose a cardiac rehab program?
When comparing cardiac rehab programs, ask whether the program:
Is in your insurance network (you will need a referral from your provider for coverage)
Is in a convenient location
Will communicate with your provider
Has hours that fit your schedule
Offers the services you need
Is certified and in good standing with the American Association of Cardiovascular and Pulmonary Rehabilitation (AACVPR)
Has trained, certified staff, including an onsite doctor who approves and oversees your program
Requires an exercise stress test at enrollment to check that exercise is safe and to shape your plan
Has staff certified in basic and advanced life support
Tip: Save or print this checklist and bring it to your next appointment.
What happens after cardiac rehab ends?
After your last session, the staff may ask you to repeat the exercise stress test. This test helps them:
Confirm that exercise is still safe for you
Measure how much your heart and lung fitness has improved since your first test
Update your exercise plan to match your new fitness level
Finishing a center-based program is not the end of rehab. You keep the benefits of regular exercise by continuing to use what you learned about:
Controlling your cardiovascular risk factors, such as high blood pressure
Managing stress
Cooking heart-healthy meals
Avoiding tobacco products
These skills can help you for the rest of your life.
When should you call your doctor during cardiac rehab?
You should call your primary healthcare provider if you are having trouble doing what the cardiac rehab program asks of you. You can also raise any concerns with the supervising provider at your rehab center.
Along with attending rehab regularly, keep all follow-up appointments with the other members of your care team.
Follow the rehab staff's advice. They work with people in your situation every day. Exercising after a heart event can feel scary, but you are supervised throughout the program.
Conclusion
Cardiac rehab puts a full team on your side after a heart attack, heart surgery or another heart issue. Over about 12 weeks, it combines supervised exercise with nutrition, stress management, medicine guidance and emotional support. The result can be more years of life, fewer hospital stays and a better quality of life.
If you have had a heart event, ask your healthcare provider today whether cardiac rehab is right for you and request a referral.
Keep learning: Explore our heart health guides on coronary artery disease, angina and heart attack symptoms in women vs men. Have a lung condition? See how pulmonary rehabilitation works.
Frequently asked questions
What is the main goal of cardiac rehab?
The main goal of cardiac rehab is to help you recover and get stronger after a heart event while lowering your risk of another one. It does this through exercise, education, nutrition counseling, risk factor management and emotional support.
How long is cardiac rehab?
Cardiac rehab usually lasts 12 weeks, with 36 one-hour sessions held three times a week. Phase 3, keeping up exercise on your own, continues for life.
What are the 3 phases of cardiac rehab?
The three phases of cardiac rehab are phase 1 (inpatient, in the hospital), phase 2 (outpatient, at a rehab center) and phase 3 (on your own, long term).
Is cardiac rehab only for heart attack patients?
No. Cardiac rehab also helps people with heart failure, stable angina, a ventricular assist device, a heart or heart-lung transplant, heart valve repair or replacement, bypass surgery, angioplasty with or without a stent, and peripheral artery disease.
Is cardiac rehab safe?
Yes. Cardiac rehab is very safe because trained staff supervise every session and check your heart rate and blood pressure. Injuries or dangerous heart rhythms are very rare, and staff are trained to treat them right away.
Do I need a referral for cardiac rehab?
Yes. Your healthcare provider gives you a referral, and insurance usually requires one to cover the program.
Helpful resources
References
Cleveland Clinic. Cardiac Rehab. Cleveland Clinic Health Library. Last updated April 28, 2023. Accessed October 20, 2026. https://my.clevelandclinic.org/health/treatments/22069-cardiac-rehab
Dibben G, de Vries FBG, Faulkner J, et al. Exercise-based cardiac rehabilitation for coronary heart disease. Cochrane Database Syst Rev. 2026;9(9):CD001800. PMID: 42754260. https://doi.org/10.1002/14651858.CD001800.pub5
Long L, Mordi IR, Bridges C, et al. Exercise-based cardiac rehabilitation for adults with heart failure. Cochrane Database Syst Rev. 2019;1(1):CD003331. PMID: 30695817. https://doi.org/10.1002/14651858.CD003331.pub5
Anderson L, Sharp GA, Norton RJ, et al. Home-based versus centre-based cardiac rehabilitation. Cochrane Database Syst Rev. 2017;6(6):CD007130. PMID: 28665511. https://doi.org/10.1002/14651858.CD007130.pub4
U.S. Centers for Disease Control and Prevention. How Cardiac Rehabilitation Can Help Heal Your Heart. CDC. Last updated May 2024. Accessed October 20, 2026. https://www.cdc.gov/heart-disease/about/cardiac-rehabilitation-treatment.html
Medical disclaimer
This article is for general education and does not replace advice from your own healthcare provider. If you have chest pain, trouble breathing or other signs of a heart attack, call your local emergency number right away.
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