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Men who wear boxer shorts produce higher quality semen, study
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Tight underwear impacts most on male fertility
Tighty whities' really do damage a man's fertility
6 reasons your penis might go numb from tight trousers to a sex injury and cancer
Can wearing tight underwear lower sperm count and impact male
Does it have an effect on sperm concentration and quantity if men wear triangle or boxer underwear? - Quora
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