3. Lift weights
Scientists once believed that nothing could be done about the withering of muscles associated with aging. Then, in 1990, a study was published by the August Krogh Institute in Denmark that indicated there was one group of aging athletes who maintained the strength of men half their age: weight lifters.
Studies from Tufts University in Boston confirmed that muscle and bone loss could be stopped and even reversed through weight training. After lifting weights twice a week for a year, a group of postmenopausal women in their 50s and 60s made gains in bone density, and their scores on strength tests soared to levels more typical of women in their late 30s.