Go to any gym across the country and you’re likely to find quite the variety of folks “getting their workout on.” You may notice a couple Tara Reid doppelgangers on the stair stepper who appear to have been there for the past 12 hours, a cluster of guys wearing 1980’s style muscle shirts swarming around the bench press, a few big-boned characters “jogging” on the treadmill and, last but not least, a smattering of normal folk trying to stay in shape. You can’t help but wonder, “What motivates these people to exercise day in and day out?” Is it pure physical gains? Psychological? Neuro-chemical? Social? The answer is probably a combination of all of the above. Of note, however, is the psychological effect of exercise. We’ve all experienced the endorphin-rich high after a good workout. What if we harnessed that positive feeling…could it help with depression? This simplistic yet promising thought has to have crossed the mind of a psychiatrist somewhere.in the world. Well, it turns out is has. We decided to hit the textbooks and scientific journals to get to the bottom of the issue.