Why Four Workouts a Week May Be Better Than Six  

Jill Tucker, RN says: “Chill out. Take it easy. Less is more. A recent study suggests that a more moderate approach to exercise may be more effective than a strict daily workout. It seems that even exercise can be too much of a good thing. But don't slack off!” Why Four Workouts a Week May Be Better Than Six Well.blogs.nytimes.com  February 13, 2013