Splayed Gecko Wedge = find a corridor space that is slightly smaller than arms' width wide and have a spotting partner near by. Jump up and splay yourself between the walls. Then very slowly rotate your body a full 180 degrees so that your feet are touching the ceiling and you are completely upside down (a high-grip wall surface is essential). When you are in a securely wedged position, straighten arms and legs as much as possible.
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