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Stig Severinsen - Guinness World Record - Longest Freedive Under Ice (236 feet) - in SPEEDOS! - YouTube
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Breatheology: The Art of Conscious Breathing: Stig Avall Severinsen, Mark Colberg Goldsmith, Per Diemer: 9781928649342: Amazon.com: Books
![Breatheology: The Art of Conscious Breathing: Stig Avall Severinsen, Mark Colberg Goldsmith, Per Diemer: 9781928649342: Amazon.com: Books Breatheology: The Art of Conscious Breathing: Stig Avall Severinsen, Mark Colberg Goldsmith, Per Diemer: 9781928649342: Amazon.com: Books](https://m.media-amazon.com/images/I/41p1+8TWtML._AC_SY780_.jpg)
Breatheology: The Art of Conscious Breathing: Stig Avall Severinsen, Mark Colberg Goldsmith, Per Diemer: 9781928649342: Amazon.com: Books
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