If you mean in the sense of pulling, probably Nordic curls, although they're a pretty advanced movement. Usually, though, pushing strength is enough for most p

If you mean in the sense of pulling, probably Nordic curls, although they're a pretty advanced movement. Usually, though, pushing strength is enough for most people for their legs, so if you mean in terms of hard, difficult movements, then working your way up to pistol squats is a good goal for most people.