Squats — you love 'em, you hate 'em, or you love to hate 'em. In any case, they are a simple, effective, and versatile move to have in your workout arsenal. Squats work your entire lower body: calves, hamstrings, glutes, quads, and lower back. They help prevent injuries caused by imbalance or overuse, and they also help with your balance. Whether you are new to the squat world or are bored with your normal workout, here are seven squat variations to add to your routine.