1. Setup by laying facedown on the main pad of a GHD positioned at the base of your hips.
2. Reach back and grasp the back of the machine with whatever grip allows you to maintain your position.
3. Begin in a position of hip flexion and initiate the movement by flexing your glutes.
4. Extend the hips and finish with your body in a straight line.
5. Repeat for the desired number of repetitions.