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Anonymous
>>151259 Q. Does it matter what kind of underwear I wear? A. The old wives' tale that tight underwear causes decreased fertility has, perhaps, some basis in the truth. The truth is that excess heat applied to the testicles can decrease sperm production. This has been shown in men using hot tubs. However, the type of increased heat produced by tight clothing and/or underclothing has not been shown to elevate scrotal temperature. Hence, tight underwear has not been shown scientifically to cause any increase in testicular heat and is not thought to have any effect on sperm production. Nevertheless, if you would like to try a change in clothing to see what happens, there is really no reason not to try it.
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