A major new study found that boxers beat briefs when it comes to making babies.
The findings indicate that tighter underwear inhibits the production of sperm -- data that can be essential for couples experiencing unexplained male infertility.

Video Boxers or briefs? Largest-ever study shows boxers may beat briefs for baby-making - ABC News

Boxers or briefs? Largest-ever study shows boxers may beat briefs for baby-making - ABC News

Boxers or briefs? Largest-ever study shows boxers may beat briefs for baby-making - ABC News

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