Garrett Greiner Completes 222 L-Sit Muscle-Ups in Under One Hour
The Iowa endurance athlete learned the demanding movement less than two weeks before the attempt, then surpassed the previous world benchmark while honoring a young girl whose courage and faith inspired him. By Atlas Editorial Team 23 July 2026 • Sioux City, Iowa, [USA] Breaking World Record’s Like It’s Easy Garrett Greiner had never completed a single L-Sit muscle up until less than two weeks before he broke the world record. He did not spend months refining the movement.
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