Shallow-water blackout
U.S. swimming pools ban long breath-holding after deaths
New York City is putting up warning signs at all public pools prohibiting prolonged breath holding as a part of a movement to raise awareness of the peril.
May 29, 2015
U.S. swimming pools ban long breath-holding after deaths
New York City is putting up warning signs at all public pools prohibiting prolonged breath holding as a part of a movement to raise awareness of the peril.
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