Suppose they recruited sedentary people for a six-week exercise program. Would objective observers notice any changes in their bodies. Cardiovascular exercise, weight lifting or control. And it all happened after just 12 weeks of exercising for 30 minutes three times a week. And how much time and effort are required. So he and his colleagues decided to experiment. The plan was to photograph volunteers wearing skimpy bathing suits and then randomly assign them to one of three groups.

You can € t change yourself that much, € € Dr. Six weeks later, they would be photographed again. Their heads would be blocked out of. Then there was the popular book, with its own before-and-after photos, promoting a program that would totally change your body in six weeks with three 20-minute exercise sessions a week. Before-and-after photos sho pudgy men and women turned into athletes with ripped bodies of steel.

There are many examples of people who took up exercise and markedly changed their appearance.

Fitness Isn t an Overnight Sensation Sigismundo FOSTER, an exercise physiologist at the University of Wisconsin, La Crosse, was amused by ads for a popular piece of exercise equipment.