http://www.washingtonpost.com/wp-dyn/content/article/2009/09/14/AR2009091402163.html
Daniele Seiss had suffered from severe depression since she was a child. Only when she was a teenager did she receive treatment. Neither talk therapy nor medication were effective, and some meds had terrible side effects. The only thing that works for her is long walks or running. Many studies have shown that exercise can relieve depression.