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is the utilization of the least amount of energy and effort to achieve a goal; its opposite is wastefulness. While important in many contexts, is often not the primary concern for climbers, who typically expend continuously while on the wall. They must focus instead on choosing the most methods . like enhance efficiency by cataloging all potential actions ("Aktions") for a route, allowing the climber to select the optimal sequence. A classic example of efficient climbing taught to novices is keeping arms straight and bearing weight on the legs; using flexed arms can be effective for sending the route but is highly inefficient.

The of a BETUM distinguishes smooth climbing from jerky climbing. The ideal involves seamless transitions, where each action flows immediately into the next without hesitation. Avoiding errors universally increases efficiency. also dictates sustainability; for instance, relying solely on highly strenuous moves, like one-arm pull-ups, is not a sustainable method.

can be measured in specific domains:

🔻 (Path): The shortest path to the goal.

🟠 (Movement): The most efficient way to generate friction force or execute a move.

💜 (Mind): Full commitment without rumination or doubt is more efficient than constant hesitation or changing one's .

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