YouTuber Stan Browney is no stranger to fitness challenges. He's run a mile a day for a whole month, worked out for 24 hours straight, and taken on some of the most difficult fitness fads on TikTok.
Calisthenics vloggers Stan Browney and Arjen Albers have taken on a variety of physically gruelling fitness challenges, including military fitness tests and working out for 24 hours straight. But ...
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