Stretching before you hit the gym may not help your workout, but make it worse. An analysis of several studies found stretching before physical activity can reduce muscle strength.
http://www.king5.com/health/Stretching-before-exercising-may-not-help-your-workout-202755781.html
http://www.king5.com/health/Stretching-before-exercising-may-not-help-your-workout-202755781.html
