Assume single-leg position with off leg in front
Drive hips back and lower into squat position keeping knee behind toes and weight on heels
When top of thigh is parallel to ground, drive forward and up, out of squat.
Repeat for specified reps; perform on opposite leg
Sets/Reps: 2x20 each leg
Hackett: This is great for hip, hamstring and glute strength and balance.