What is the purpose of cardiac rehabilitation for a person?

Specialized heart pr. Cardiac rehab is a structured program run by medical professionals that includes supervised exercises tailored to your medical & physical condition, education on how to control your risk factors for heart disease. Multiple scientific studies have shown it improves patient outcomes like quality of life, survival, physical fitness, reduced re-hospitalization, better control of cardiac risk factors.
Build up strength. The heart is a muscle not unlike the muscle in the legs. If it is injured it needs to have a gradual return to normal function. Similar to when you pull a leg muscle, an injured heart muscle must be slowly return to peak functioning. If you try to push too hard physically after a heart attack you might further injure the fragile tissues. Cardiac rehab is a controlled environment to safely ramp up.