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更新日期：2018-06-28
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The elite athlete's secret.
You can survive 3 weeks without food and 3 days without water but just 3 minutes without oxygen.
Breath hold training improves critical thinking, reduces anxiety, optimizes respiratory efficiency, and increases survival time without air.
An effective alternative to hypobaric or normobaric hypoxia to increase aerobic and/or anaerobic performance.