Fitness guidelines for adults recommend both cardiovascular, or aerobic, exercise and muscle-strengthening activities. Upstate exercise physiologist Carol Sames, PhD, explains why strength training is so important, especially for seniors, and various ways to achieve it. She also addresses the value for seniors of improving balance and flexibility and reducing sedentary behavior. Click here to see the physical activity guidelines recommended by the U.S. Department of Health and Human Services, along with other helpful information on health and fitness.