Polly’s Pearl #3 – Legs Against the Wall Pose is a calming pose that fights fatigue, restores your energy, and alleviates low back pain and tight hamstrings. In Chinese Medicine we call this the “Kidney Repose”, because when you stay in the pose for 5 – 20 minutes, it allows the blood to drain out of the legs and pool in the kidney area, restoring the kidneys with fresh blood and oxygen.