Elite freedivers who dive unaided to depths of up to 350ft have brain oxygen levels even lower than SEALS, study reveals

sriamerican

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  • Aug 2, 2020
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    • Scientists used smartwatch-like devices to monitor elite freedivers
    • Heart rates were as low as 11 beats per minute during dives of 350ft deep
    • Blood oxygenation levels are normally 98%, but this dropped to just 25%
    • These are similar levels seen in marine creatures including seals and whales
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