The single-leg hack squat is a lower-body exercise mainly targeting the quads, performed one side at a time per set. It is often used as an accessory for squats, or as a muscle-building movement during lower-body training, and is usually performed for moderate to high reps, such as 8-12 reps per set or more.
Builds size and strength in the quads
Great quad burnout on leg day
Helps with imbalances in strength and size between legs