Weightlifting is a sport that involves lifting heavy weights in order to build strength and muscle. Weightlifters' lifts are the exercises they perform in order to increase their strength and power. The term REPS, which is an abbreviation for repetitions, refers to the number of times a weightlifter performs a particular exercise. Weightlifters typically perform multiple sets of a given exercise, with each set consisting of a certain number of reps. By performing multiple sets of reps, weightlifters can increase their strength and power over time.