Instructions
Stand tall and straight, with your feet planted about hip-width apart, and your hands on the back of a stable chair or another secure form of support.
When ready, exhale and lift your foot behind you by bending at the knee, ensuring that there is no additional movement above the knee.
Bring your heel up towards your glute while keeping it in the same vertical line as your upper leg.
Once your leg reaches a 90-degree bend, briefly pause before lowering your foot down to the floor.