Most of us need to follow an exercise program. This is due to the fact that just a minority of Americans exercise in a significant way. Below follows 7 good reasons to start exercising now.1. Contributes to fat loss.It is well documented from scientific research all over the world for many years that physical exercise contributes significantly to weight loss. I will not dwell on this issue fore it is so obvious, but just mention the simple fact that weight loss is a function of the net calorie.