1. Starting in plank, lay with your toes on the ground holding yourself up with your hands. Lower your torso to within inches of the ground until your elbows reach a 90-degree angle.
2.Keep your elbows close to your body and keep your head facing forward. Keep your body in a flat plank—do not drop your hips, or have them too high either, stay as straight as possible.
3. Push the ground away from you with your palms only, until your arms are straight, keeping your core tight.