Start with your upper back supported by a padded surface behind you (such as a bench or box). Place your feet hip width apart with your toes slightly turned out. Move your left foot forward until the heel of your left foot is in line with the toe of your right foot. Lift the toes of your left foot off the ground. Grip the barbell firmly in each hand. Focusing the tension in your right glute, 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 when your hips reach full hip extension, keeping the tension in your right glute 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.