Regular exercise is one of the most important things you can do for health. Participation in physical activity improves several body functions. These include: weight control, decreased risk of cardiovascular disease, decreased risk of diabetes, reduced risk of cancer, improved strength of bones and muscle, enhanced emotional status, decreases the natural degenerative changes that come with aging, and increases your chances to live longer.  

That said, being consistently active can actually cause degeneration. Rest and recovery periods are essential as these periods allow the body to repair and rebuild itself. Consistently exercising can lead to overuse injury. Be sure to discern between consistently exercising and regular exercise.