For how long should I inhale and exhale into a brown paper bag? What is the generally accepted length of time for this? How many times a day should this be done? Does Ray Peat say anything about these (I would prefer if you could add a quote or a source)?
Can doing it for 15 minutes cause hypoxia and cause brain cells to die?
Can doing it for 15 minutes cause hypoxia and cause brain cells to die?
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