Joint Statement from the American Red Cross, USA Swimming and YMCA of the USA on Hypoxic Blackout
CHICAGO, September 30, 2015 – The practices of hyperventilation preceding underwater swimming and exten
Joint Statement from the American Red Cross, USA Swimming and YMCA of the USA on Hypoxic Blackout
CHICAGO, September 30, 2015 – The practices of hyperventilation preceding underwater swimming and exten