Squat check please

[Chesticle]

So simple, yet so difficult for me.

How do I perfect my form? How do I deal with the buttwink?

[Adam Franklin]

Unfortunately, I can't see much from this angle. Many issues may go unnoticed. There's a sticky at the top of the subforum that addresses this.

What I can see is that your torso is too vertical early on in the descent. Look down, take a huge breath and squeeze your abs HARD, then start your squat by pointing your nipples to the floor (don't be afraid to tip at the hips!). This will fix the bit of lumbar over extension to flexion you are concerned about.