STARTING POSITION:
Stand straight with your feet shoulder width apart next to a wall. Your shoulder should be pointing the wall and around half metre of it. Place your fingers at the bottom of the wall.
MOVEMENT:
Start walking with your fingers up through the wall in a straight line. Make sure you only move your arm and fingers. Avoid any other movement of your body. Return to the starting position and repeat the exercise for the specified amount of repetitions.
TIPS: The exercise key is quality over quantity. The trick is to perform the exercise using proper form.