AEROBICS

 Regular aerobic activity, such as walking, bicycling, or swimming, can help you live longer and healthier. Need motivation? See how aerobic exercise affects your heart, lungs, and blood flow. Then get moving and start reaping the rewards.

How your body responds to aerobic exercise
During aerobic activity, you repeatedly move large muscles in your arms, legs, and hips. You'll notice your body's responses quickly.

You'll breathe faster and more deeply. This maximizes the amount of oxygen in your blood. Your heart will beat faster, which increases blood flow to your muscles and back to your lungs.

Your small blood vessels (capillaries) will widen to deliver more oxygen to your muscles and carry away waste products, such as carbon dioxide and lactic acid.

Your body will even release endorphins, natural painkillers that promote an increased sense of well-being.

What aerobic exercise does for your health
Regardless of age, weight, or athletic ability, aerobic activity is good for you. Aerobic activity has many health benefits, no matter your age. As your body adapts to regular aerobic exercise, you'll get stronger and fitter.