Do I really need to explain why the side bend with two dumbbells is a worthless exercise? Probably, because I still see it every week at the gym!
Listen folks, it's simple mechanics: holding a dumbbell in each hand negates the need for the muscles to do the job. Instead of having to use your obliques to lift the weight from one side up, you simply rely on the weight in the other hand to counter-lever your way up.
Listen folks, it's simple mechanics: holding a dumbbell in each hand negates the need for the muscles to do the job. Instead of having to use your obliques to lift the weight from one side up, you simply rely on the weight in the other hand to counter-lever your way up.