By US News & World Report 10/26/2012
“People who exercise 2.5 to 7.5 hours a week have better mental health, but more than that is associated with poorer mental health, a new study suggests.”
Read the entire article: http://health.usnews.com/health-news/news/articles/2012/10/26/right-amount-of-exercise-can-boost-mental-health-study
