Serratus expension&back workout+Winners

Want to make your back stronger and wider than it has ever been? Give this new workout a try: “SERRATUS Expansion Back Workout“! This 45-minute workout is the best way to expand the skeletal muscle that draws the rib cage backwards downwards. It’ll also absolutely destroy your back muscles! Full version is now available in the Team Fitt members’ section. Join NOW for more than 110 workout, cooking, and motivational videos. Get you nutrition planner: