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 ...

Medically reviewed by Theresa Marko, PT, DPT, MS Having bad knees does not mean you can't be active. Strengthening the muscles around your knees can improve mobility and decrease pain. You can do many ...