A good drill for the entire body: First walk up and down the wall with your fists facing the wall and than with your back to the wall. Next change the distance to the wall and vary it each time and learn to adapt and use what you have well and in a relaxed manner (effective and efficient). next lie with your feet touching the wall and climb it with your feet (mind the paint) both facing and and looking away to the wall. This is a good drill to learn to move with confidence and balance in an unsusual situation and you can add rolls to it to help relax the body. The purpose it to know yourself in different situations and grow healthier not to overcome yourself.