Core, Quadriceps, Glutes
Stand with your back against a stable surface. Slowly descend into a seated position, your back resting against the wall, head neutral.
Thighs should be parallel to the ground, knees stacked directly above your ankles.
Heels planted into the ground, and the knees are not caving inwards.
Control your breathing and hold for time.
Progressions And Regressions