Staying Fit After 40

According to former Surgeon General C. Everett Koop, inactivity among Americans is reaching crisis proportions. Sixty percent are not active on a regular basis, and one in four are not active at all. Yet medical science has proven that keeping fit is the key to staying young, and as you get older, regular exercise and good eating habits-or their absence-will be crucial to determining the quality and enjoyment of your life.