With both feet flat on the ground, place one leg in front of your shoulder, your other leg should mirror this position behind your other shoulder. In the starting position both of your knees should be straight.
Place the palms of your hands against the wall at shoulder height in front of you, lean towards the wall and bend your front leg at the knee while keeping your back leg straight.
Pause at the apex of the stretch and return to the starting position. Switch the position of your legs and repeat.