Start with your upper back supported by a padded surface behind you (such as a bench or box) and a long resistance band resting across your hips secured on either side of you using rack hooks or a pair of heavy dumbbells. Place your feet hip width apart with your toes slightly turned out and your hands on your hips. Focusing the tension in your glutes, drive your hips up to full hip extension, exhaling as you do so and making sure to keep your heels pressed firmly into the ground. Keep your chin tucked and eyeline looking forward throughout the movement. Pause for a count of one, keeping the tension in your glutes and then return with control to the start position, inhaling as you do so. Repeat.