All human beings need exercise, a relic from pre-historic times when human beings hunted wild game across the plains of Africa. Our lifestyle has long since changed, of course, but the human body “remembers” that active lifestyle and needs to meet its exercise needs. Today, many Americans visit fitness clubs and gyms to perform cardio, weight training, jogging on a track, taking spin classes, and even martial arts classes to meet this need. Gym membership and fitness club membership is often high, and these places prove popular among younger and older adults alike. This is a business like any other, …