Ankle or wrist weights are an easy way to increase the intensity of your workout. You just strap them on to walk, jog, jump or lift. The added weight makes your muscles work harder, causing you to expend more energy. Ankle/wrist weights also provide a convenient way to add resistance to exercises traditionally done using just your body weight, such as side leg lifts. You can also add them to glute-toning donkey kicks, which you perform by getting into an all-fours position and "kicking" one leg out toward the ceiling. You should only add ankle weights once you've mastered body-weight versions of each exercise.