We begin to challenge our proprioception, the sense of where the body is in space, by adding a twist to standing postures such as Utkatasana, Parsvakonasana and Parivrtta Trikonasana.
Then we come back to the wall and practise extending into a slightly more challenging twisting standing balance. Twists also keep the muscles around the spine supple and mobile. Level 1-2, no props needed.