Do you have trouble keeping up with a long term exercise program? Are you always looking for an excuse not to exercise? Studies show that most people need variety and motivation to stick with their exercise program. Walking 20 minutes a day at the same speed and elevation is neither motivational nor particularly effective. After a period of time your body will adjust to the amount of work you do and the workout will no longer provide results. Programs provide variety and increasing difficult. Realizing how much more work you can do in your 20 minute workout from your starting point can be as motivating as the changes you see and feel in your body.