It may be related to the chemicals, endorphins, is released in the blood stream during and after exercise. And another study released earlier this year, by researchers at the University of Texas Southwestern Medical Center at Dallas, found that 30-minute aerobic workouts done three to five times a week cut depressive symptoms by 50% in young adults. Sarah Frayne also did a paper on similar topic. By no mean this is any type of advice, but it gives another reason to do regular exercise. Workouts Can Lighten Heavy Hearts – [Forbes]