Start with your upper back supported by a padded surface behind you (such as a chair). Place your feet hip width apart with your toes slightly turned out. Gently lift your left leg a few inches off the floor. Focusing the tension in your right glute, drive your hips up to full hip extension, exhaling as you do so. Make sure to keep your right foot pressed firmly into the ground. Keep your chin tucked and eyeline looking forward throughout the movement. Pause for a count of one when your hips reach full hip extension, keeping the tension in your glutes and then return with control to the start position, inhaling as you do so. Repeat all the required reps on one leg before changing to the other.