Not long ago, I went to a bouldering gym in New York with two friends. One of my favorite things about climbing is how communal it is, and on this particular day a group of people had gathered around one course, lining up to try it and cheering strangers on. It was very simple, consisting of only four holds – one large one near the group with a flat top, two smaller holds on the sides of it, and then a larger ledge straight above almost reaching the top of the wall. The only way to finish the course was to step on the one below with one foot while grabbing the smaller holds, swinging your body towards and away from the wall, and then jumping up to grab ahold of the top ledge with both hands. The only way to finish was to psych yourself up, believe that you could do it, and jump with the momentum with both arms straight up.
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