Glute Bridge with Rocks
To do the Glute Bridge With Rock, set up like you are going to do the Basic Glute Bridge. Lie on your back with your knees bent and feet flat on the ground. Your feet should be about hip-width apart and your knees should be in line with your feet and hips.
Bend your arms to 90 degrees and then drive through your arms, upper back and heels to bridge up. Squeeze your glutes and brace your abs to bridge up.
Then slightly release the contraction in one glute and rock to bridge one hip up slightly higher. Really focus on contracting that glute.
Release that side and rock your other hip slightly up to contract that glute harder. Keep your abs braced as you rock slightly and alternate contracting each glute a little bit extra at the top of the bridge.
Do not let your low back take over as you hold at the top and work to contract each glute a little bit extra. Also, do not let your hips sag down toward the ground.
Alternate rocks until all reps are complete then lower down.