Re: How to stop butt wink end of squat?
Ben, how is you mobility, how is your range of motion. strength, are you on your heels?
What can you do, what can't you do. That will help alot more.
In saying that. make sure your core (abs, back) are tight befor you even start the squat. Keep them tight and DO NOT surrender form through out the movement. Knees out from the TOP of the squat and keep them out through out the movement.
With out any other info, exercises that help mobility, is sitting in a squat WITH GOOD core and no butt wink, driving the knees out with your elbows for 1 min at a time, really focused on good form may help.