push-up (wall)

Stand facing a wall, about arm's length away. Place your hands on the wall at shoulder height, slightly wider than shoulder-width apart. Step back a few feet, keeping your body straight and your feet hip-width apart. Bend your elbows and lower your chest towards the wall, keeping your body in a straight line. Push back up to the starting position, straightening your arms. Repeat for the desired number of repetitions.