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It’s long been suspected that the underwear men use and the positions they hold their bodies in can affect sperm quality, and now new research has backed up the notion that men should be free and unfettered in the interest of having children.
Sleeping Naked (And Wearing Boxers) Can Help Increase Sperm
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Sleeping Naked (And Wearing Boxers) Can Help Increase Sperm
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Boxers or briefs? For sperm count, one is better, study finds
Men Should Wear Boxers and Sleep Naked to Keep Sperm Healthy
Does it have an effect on sperm concentration and quantity if men
Men-Women-Pictures-Classification/men.txt at master · Neufunk/Men