In tandem with squats, deadlifts rank as the most productive size-blaster in the repertoire of bodybuilding movements. Deadlifts are one of the most overlooked exercises, particularly by novice and intermediate bodybuilders, who may mistakenly view the exercise as more of a powerlifting move than a bodybuilding exercise. Deadlifts are a challenge, but you won't fulfill your back potential without them. Perfect form is critical with this exercise, because so many muscle groups are involved. For this reason, five reps are sufficient for all sets, including lighter sets. Performing higher reps with lighter weights can fatigue stabilizers before larger muscles have been challenged to their full extent, creating a risk of injury.