How to do it

1. Stand with your back against a wall and slide down into a seated position with knees bent at 90 degrees.
2. Place your hands at your sides or behind your head for support.
3. Engage your core and lean to one side, bringing the same side shoulder towards the hip.
4. Return to the starting position and repeat on the opposite side.
5. Continue alternating sides for the desired number of repetitions.