Men who wear tight boxers produce lower quality SPERM, study
By A Mystery Man Writer
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Men who wear looser-fitting boxer shorts have 25 percent higher sperm concentration, researchers say
Are Tighty-Whities Bad for a Man's Sperm Count?
Men who wear boxer shorts have far better sperm, study suggests
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Men who wear tight boxers produce lower quality SPERM, study reveals - Mirror Online
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Men who wear boxer shorts produce higher quality semen, study finds, The Independent
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What underwear do you wear? : r/mensfashion
Discover What Exactly Effects of Tight Underwear Are
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