Data from the National Sporting Goods Association indicates that treadmills have been the number-one-ranked home aerobic equipment for the past three years.

The popularity of walking as a fitness activity is growing by leaps and bounds. Low risk and easy to start, walking has proved its health benefits in numerous studies.

The ability to perform a given sport or activity, whether it involves swinging a bat in softball or running 10Ks, invariably declines when the sport is abandoned for any length of time.

Fitness enthusiasts have frequently reported that they experience less sickness than their sedentary peers.