AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/scout-hyperventilation-underwater

Why is it dangerous to breathe fast and deep on purpose before holding your breath underwater?

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  1. It may delay breathing signals until you pass out
  2. It raises carbon dioxide until you pass out
  3. It uses up all oxygen before you enter the water

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References

  1. First Aid merit badge pamphlet filestore.scouting.org/filestore/Merit_Badge_ReqandRes/Pamphlets/First%20Aid.pdf Checked 2026-10-09.

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