# Is there any upper speed limit to the human body?

**URL:** <https://boards.straightdope.com/t/is-there-any-upper-speed-limit-to-the-human-body/792047>\
**Category:** Factual Questions\
**Created:** [July 24, 2017, 6:15pm UTC](https://boards.straightdope.com/t/is-there-any-upper-speed-limit-to-the-human-body/792047 "2017-07-24T18:15:11Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Buck\_Godot](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/buck_godot/32/6573_2.png) [@Buck\_Godot](https://boards.straightdope.com/u/Buck_Godot)\
**Post date:** [July 25, 2017, 4:38pm UTC](https://boards.straightdope.com/t/is-there-any-upper-speed-limit-to-the-human-body/792047/21 "2017-07-25T16:38:30Z")

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However, is there a velocity that is so high, that the energy density of the human body at that speed relative to most of the rest of the universe would make it effectively a black hole? And, if I’m not totally screwing up my physics with the previous question, how would the rest of the universe look to an observer in such a state?

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