The push-up begins by walking yourself back into a plank with your arms straight, palms under your shoulders. Push your knees straight as you squeeze your butt and abs. Make your body as rigid as possible from your knees to your neck. Wrists, elbows and shoulders should be stacked over each other before beginning the descent.
Strongly grip the bar rotate your elbow pits forward, and begin to drop. Remember to keep the elbows from flaring out by keeping the elbow stacked over the wrist as vertical as possible. Once at the bottom, step up and reset yourself.
Whatever you do, don’t lose tension in your butt or abs or let the elbows flare.