In a new study published by the Journal of Psychiatric Research, exercise has been shown to have significant positive impact on people who suffer from depression- even Major Depressive Disorder.
"Exercise has a large and significant antidepressant effect in people with depression (including MDD). Previous meta-analyses may have underestimated the benefits of exercise due to publication bias. Our data strongly support the claim that exercise is an evidence-based treatment for depression."
Exercise as a treatment for depression: A meta-analysis adjusting for publication bias
Schuch, Felipe B. et al.
Journal of Psychiatric Research , Volume 77 , 42 - 51