Get in an amazing workout by incorporating these unique strength-training moves — they only use one dumbbell. Some of these exercises work both sides of the body at once, while others target one side at a time, which may reveal which parts of your body are weakest. This will help to strengthen your body more efficiently and help prevent injury. One-sided moves also require you to focus on your balance, which automatically fires up the muscles in your core and other stabilizing muscles. These moves are not intended for one workout; you should mix two or three into your regular strength training routing.
Working one arm at a time makes the core work more to stabilize your torso while you work your chest.