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tomnipotent
on Jan 9, 2021
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Advice from a 104-year-old PhD student [video]
Guinness World Record holder Stig Severinsen just did an AMA on reddit - single breathe 22 minute swim (physical exertion).
https://www.reddit.com/r/IAmA/comments/kppxkn/i_just_set_the...
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