It’s been a very long time since we’ve done these. It showed too, taking everyone 2-3 sets to get acclimated and comfortable on one leg. The goal is to keep the trunk and back leg connected. The movement should happen through the hips. Jennine in good position.
Rotating the hips is a common error. For some it’s mechanic (i.e. they don’t have the range of motion or motor control to do it right.). For others, like Tammi, it’s simply a matter of knowing what you’re doing wrong and fixing it.