'Doug McGuff, MD demonstrates the \"Big 5\" Workout as detailed in the book \"Body By Science.\" This is Part 2 of a four-part series.' 

Tags: fitness , exercise , Health , Body by Science , strength training.

SEE ALSO: flex , style , indian , could , routine , Your , India , การออกกำลังกาย� ต้น Zumba , 11th , kourtney kardashian