Exercise should be part of every person's daily regimen. Exercise enhances multiple systems in the body and its affects on appearance are an extra benefit. Specifically walking, running, biking, swimming and many other exercises of this nature enhance cardiac and pulmonary function. Those who exercise tend to weigh less, control their diets better, lose less days from work/school and have more resistance to diseases. Obesity, a world-wide problem, is markedly less in a well exercised individual. In addition to the enumeration of exercises noted previously calisthenics, light to medium weights and basic isometric exercises, performed on a regular basis, may increase longevity. I have been performing a similar regimen of exercises for decades which I believe have kept me healthy and out of the doctors office. My workout takes 20-30 minutes. This excludes walking and other cardio workouts I do. Start the exercise habit early. After a while it becomes ingrained into your mind. Thank you for allowing me to answer your question. Mark Davis, MD