Other studies on the benefits of exercise have shown:
Increased health span: A study following Harvard grads for 30 years showed those moderately active were at substantially decreased risk of death.
Decreased Health risks: Strengthens the heart muscle for good circulation, decreases blood pressure and reduces stroke risk.
Reduced stress: With a moderate intensity workout of 20 minutes.
Improved sleep quality: Researchers at Stanford, Emory and the University of Oklahoma reported older people doing brisk walking and/or low-impact aerobics four times a week went to sleep faster and slept an hour longer than before.
As Rabbi Mosche Ben Maimon emphasized, it takes a two pronged approach of not over eating and exercising to have good health.