Our expert says:
you can google the do's and do nots of ensuring quality sperm.
however, it is true that sperm is best produced and maintained at a lower bodytemperature (hence your testicles are in a scrotum that hangs outside the body). but wetting your testicles will not serve any purpose. the only pointer to remember is that you should not bath in extremely hot water for long periods of time. doing so, will damage the sperm.
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