Apologies for the ugly settings.
I'm doing a arch body rocking back and forth for 20 reps or so. My legs aren't together because I can't simply join them and they tend to widen. I have a scholiosis and my left leg is bigger than my right. I often can't quite feel my lower back in exercises.
Is my form acceptable?
I also have problems with the straddles up, but perhaps I'll open another thread for that.