Starting position

1. Get into the starting push-up stance. 
2. Place your elbows so that they are bent at right angles and in line with your shoulders.
3. Tighten your abdominal, gluteal and back muscles so that your body is in a straight line position. 
4. Remember to keep your gaze facing forward.

Implementation

1. Tuck your pelvis slightly under to ensure a straight body line. 
2. Hold the position for a set time all the while tensing your abdominal, gluteal and back muscles and keeping your body in a straight position.
3. Repeat the exercise a set number of times.