If you're not sure which load to lift initially, Toya uses 5 and 10lbs dumbbells for the routine, while Juice works out with 10 and 15lbs. You'll train for 25 seconds, take a 15-second break, then ...

In this hilarious and unexpected challenge - bodybuilders face off against a tiny 1-pound dumbbell that’s been super glued to the floor! Watch as these muscle machines struggle, strategize, and try ...

How to do it: Grip the bar at knee height with your hands just outside shoulder width. Push your hips back and then ...