Dear Fa, Over the years, we have exchanged opinions on how to respect and care for our bodies, tbe aware of the body, respect limitations, and be on guard for injury. Today there is a strong emphasis on aerobic exercise, strength training and flexibility for every age. A personal trainer at the neighborhood gym believes that these three components are essential for healthy living. Recently, he helped a ninety-year-old woman get stronger with lifting weights twice a week and so he is convinced that no matter what the age, anyone who really wants to and is disciplined can make significant change.