Start with your upper back supported by a padded surface behind you (such as a bench or box), a barbell resting across your hips and a short resistance band just above your knees. Place your feet hip width apart with your toes slightly turned out. Grip the barbell firmly in each hand. Focusing the tension in your glutes, drive your hips up to full hip extension, exhaling as you do so. Making sure to keep your heels pressed firmly into the ground and push your knees out against the band. 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.