New research shows exercise (especially when paired with creatine) can match antidepressants for treating mild-to-moderate depression by triggering muscle proteins that act like "miracle grow for the brain." Dr. Nicholas Fabiano explains how psychiatrists are using systematic exercise protocols and creatine supplementation alongside traditional treatments, plus warning signs when exercise becomes harmful. Learn the FIT framework for prescribing exercise and why the future of mental health care means treating mind and body as one system.