'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: functional training , 03 , box ρο όνηση , grand , fitnessm , dance fitness , stability , popsugar fitness , bauchmuskeln , mass songs