Squats come in a variety of shapes and sizes: the conventional (back squat, front squat), the advanced (overhead squat, squat clean) and the alternative (sumo squat, zombie squat). But one variation which may not be on your radar is the hack squat.
Popularized over a century ago and named after its creator, weightlifter and wrestler George Hackenschmidt, it allows you to squat a heavy weight without putting quite as much load through your spine. This makes it an attractive option for anyone with back issues.
