I've always done squats with legs parallel, or even atg... But my coach/trainer told me tonight it's not nessessary to go that low, and he said it explains why i have knee pain. Is it possible that it's not necessary to go parallel and maybe we're being all hard core for no reason? Or does it maybe depend on goals? (strength vs size) The guy has crazy education in sports physo, which is why im wondering about it. Just wanted to hear people's thoughts.