Hack Squat
Legs · Machine
How to do it
Back and shoulders against the pads, feet mid-platform. Lower under control until the knee passes 90 degrees, letting the knee travel forward, and press up without locking out. The machine holds your trunk, so the quads take almost everything and you can work close to failure safely: which is why it is one of the best quad exercises there is. You feel the whole quad, especially at the bottom.
Variants
The drawing shows one way of doing it, and the technique above describes that one. Almost every exercise has variants — standing or seated, the grip, the bench angle — and is still the same exercise: if you do it another way, write it in the exercise note and you will have it every time you train it.
Also works: Glutes
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