Young woman is breathing into a plastic bag. This technique is said to help reduce hyperventilation. The spasmophilia crisis caused by hyperventilatio Stock Photo - Alamy
Using a Paper Bag to Control Hyperventilation
Hardly breathing. Model hardly breathing having plastic bag in head while posing for environmental campaign Stock Photo - Alamy
BREATHING AND THE GIFT OF PAPER BAGS — IKOT.PH
Experiments with human respiration | GASTEC CORPORATION
Why do people breathe into a paper bag when in panic? Doesn't it mean they breathe *in* carbon dioxide instead of oxygen? - Quora
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