Butt Wink is a common mistake that lifters make when performing the barbell
squat.

While it may not cause problems for some individuals, this rounding of the lower
back can put a lot of harmful forces on your spinal disks. Here are two things you
can do to prevent it from becoming a potential problem down the road.

First, you can simply limit your range of motion. For example, if you try to go
below parallel and notice significant rounding, then it might be a good idea to limit
your squats to parallel.

Second, it’s important to understand that butt wink is often an ankle mobility
issue. If you have stiff ankles and you go into a deep squat, your lower back will
have to start rounding in order to compensate for the lack of ankle mobility. To
improve this, try squatting with your heels on plates or use lifting shoes and see if
that helps. If it does, continue doing that while working on improving your ankle
mobility.

Doing these two things can help you develop a “cleaner” squatting technique. Try
it out and follow for more tips like this!