Instructions:

1. Place your hands on the edge of a box or elevated surface, slightly wider than shoulder-width apart.
2. Extend your legs behind you, resting on the balls of your feet, creating a straight line from your head to your heels.
3. Lower your chest towards the box by bending your elbows, keeping your body in a straight line.
4. Pause for a moment at the bottom, then push yourself back up to the starting position by straightening your arms.
5. Repeat for the desired number of repetitions.