High Intensity Intervals!

So you think you work hard on your intervals? Check out the videos Part I and II by Dr. Joseph Mercola, a osteopathic physician who is well known for his nutrition and health recommendations that often go "against the grain" of traditional advice. http://mercola.com

This particular workout is designed to boost metabolism (Mercola was once a competitive pairs figure skater, and according to his bio once ran the Chicago Marathon in just over 3 hours).