Person one lies face up while person two stands at person one's feet, facing them and holding their ankles.
Person one lifts the hips, keeping the shoulders on the ground.
While person two stays engaged, person one bends one leg to bring the knee to the chest, then extends it back into person two's hands and drives the other knee to the chest.
To exit, person two slowly lowers the ankles and person one can sit up.
Form tips
Person one engages the Core and Glutes to keep the hips high.
Person two also engages the core and glutes to keep a strong position.