Start by placing your hands shoulder-width apart. Next extend the arms as if you are at the top of a push-up. Position your elbows so that they are directly under your shoulders with arms fully extended. Curl your toes under so that you place the weight on the balls of your feet. Engage your abdominals to lift your hips off the ground and inline with the shoulders. Engage your glutes, quadriceps, and abs to lift your knees off the ground. There should be a straight line from your head to your feet.