Some kinds of weight training exercise need a helper or "spotter" to help make the motion safe. For example the bench press. Because the weight is directly above the body, a "spotter" or helper is used by many people in this exercise. The helper will stand behind the head of the person doing the exercise. If after doing some of the exercises the person doing the exercise cannot move the weight, the "spotter" will help the person move the weight back up to the starting position by taking hold of the bar and lifting together with the person.