stretching : slow lengthening of the muscles. stretching the arms and legs before and after exercising helps prepare the muscles for activity and helps prevent injury and muscle strain. regular stretching also increases your range of motion and flexibility. cardiovascular or aerobic : steady physical activity using large muscle groups. this type of exercise strengthens the heart and lungs and improves the body's ability to use oxygen. aerobic exercise has the most benefits for your heart. over time aerobic exercise can help decrease your heart rate and blood pressure at rest and improve your breathing. strengthening : repeated muscle contractions (tightening) until the muscle becomes tired. for people with heart failure many strengthening exercises are not recommended.
what type of exercise is best for a healthy heart?