4-Minute Bodyweight Fitness Workouts

http://www.FitnessandSportsCenter.com
Looking for a challenge? You'll find 10 four minute workouts that'll rev up your metabolism with the added resistance of dumbbells. Discover favorites like the Weighted Bear Crawl, Thrusters, and the Bodyblaster. Over 60 minutes of time-efficient, butt-kicking workouts!