Pain tolerance

it depends on the painkiller. but here is a crash course Pain is caused by the release in some special cases of paracrine hormones named ... which is the reason large quantities of aspirin will cause stomach aches. Tolerance to drugs appears from generally the same reason: the oxidative enzymes ...

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... women to cry rather than men. This could cause men to build a higher tolerance to reactions of physical and emotional pain as they age, as children of both sexes seem to cry the same amount.

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