This is really going to depend on your flexibilty and build. I would say you should go as deep as you can before your tailbone is about to come up of the seat, but it is impossible to say how deep this will be as a blanket statement. If your tailbone starts coming up early, you will want to work on your flexibilty, but never push beyond your current flexibilty because that is asking for an injury on the leg press when the weights get heavy. [/quote]
x2. What I do is jam my back/butt onto the chair and “pull” my body down using my hands (holding onto the handle bars on the sides). I also keep my shoulder blades retracted.
Sounds like a lot of unnecessary steps, but doing the above forces me to keep my back tight and my ass/tailbone on the seat. Might not necessarily be what works for you.
I’d start out with really low weight and work the ROM. Push the ROM as much as you can (feel the stretch), and once you absolutely cannot go down anymore without compromising your form, push the weight back up. I usually do this to loosen up because like bruno said, you’re going to hurt yourself if you push beyond your flexibility.[/quote]
I completely agree with this. If you start to feel your lower back coming up off the back then its time to rethink that ROM.