When working with weights, do NOT bend your hands back at the wrists. This is a common mistake that can lead to muscle strain or other wrist injury. To help protect your wrists, keep your hands in line with your forearms when working out with weights. This should be applied to both free weights and weight machines.

You can improve the strength of your wrists by using light handweights and "lifting" them by bending your wrists up and down. Perform this exercise in about three sets, with repetitions of 10 each time.