"... the problem isn’t aging but disuse. 'People who don’t exercise regularly suffer a 1 percent loss in aerobic fitness every year starting at age 20,'
says Barry Franklin, Ph.D. president of the American College of Sports Medicine. 'But that loss can be restored years later,' he adds, 'through just three months of steady exercise.'

This combined with a program of light weight training, will lead to improvements in cardiovascular function, skeletal muscular function, and the ability to use oxygen."