Eric Barrera | Health & Fitness Coach on Instagram: "Grow your butt with the @bootybuilder.official extension: 1. Set up the pad so the top is right below your hip crease. You done want it too high and limit range of motion or too low and put too much pressure on the quads. 2. Grab the handles, keep your arms straight and lats engaged. 3. Squeeze your glutes and hamstrings to bring yourself up to make your body a straight line. Do NOT go higher and put unnecessary pressure on your lower back. 4.