Physical fitness is essential to good health and is one of the best things you can do for your body, mind, and spirit. Exercise improves the way your body works, and it can make you look better, feel better, and even live longer.
Review Date 8/26/2017
Updated by: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.