I just joined a gym a few months ago and started squatting. I decided to go back to 0 weight and use full range butt to heels (atg) squats. I'm following a program i found on Poliquin's site that calls for full range 1 and 1/4 squats so that's what I was trying to do here....
I realize I'm coming up more than 1/4 before going back down and then all the way up, but my main concern is how my hips/lower back seem to curl into a posterior tilt at the very bottom. I wasn't aware of this until seeing this video and I was sure I was maintaining a tight arch, but I guess not. Will this get better with diligent practice or is there some kind of mobility I should be doing to help?