Learn how to do hack squats with step by step instructions, form tips, and more from qualified Personal Trainers. Learn how to do hack squats, a squat variation that uses a machine or a Smith Machine to target your quads and glutes. Find out the pros and cons, the muscles worked, and the best foot positions for this exercise. The hack squat is a compound exercise that mainly strengthens the quadriceps, hamstrings, and glutes. It is a powerful compound exercise that works the lower back and core muscles as well. typically, an altered machine that simulates a squat’s motion while supporting the neck and back is used for doing the hack squat. Learn how to do hack squats for maximum quad growth. This guide covers proper form, setup variations with the hack squat machine, benefits, and programming tips.