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Guy on the Beach
Photo by:Martynka Wawryzniac
Guys' Anatomy
Boys' bodies work in ways that sometimes even they don't understand. We decided to help them out!

Special thanks to Andrew McCullough, M.D., FACS, director of male sexual health and fertility at New York University Medical Center, and Shumyle Alam, M.D., pediatric urology fellow at the Cincinnati Children’s Medical Center.
* Name has been changed.

"Is it healthier to wear boxers or tightie whities?"

--Kris, 19, Coral Springs, FL

It’s all about what’s most comfortable for you. Tightie whities offer more support than boxers do, but there’s no medical evidence that one type of underwear is better or worse for your body.

"One of my testicles is bigger than the other. Is that normal?"

--Josh, 17, Virginia Beach, VA

No one’s body is completely symmetrical, and that goes for parts of the body that come in pairs, like testicles and girls’ breasts (even your eyes aren’t exactly the same if you look closely!). It’s normal for one testicle to be a bit bigger or to hang slightly lower than the other. The only cause for concern is if you notice one suddenly growing faster or starting to feel firmer than the other. If that’s the case, get it checked out by your doctor.

"What is the normal size of a penis?"

--Matt*, 17, Bellingham, WA

How did we know someone would ask this? Guys obsess about the size of their penis the same way girls do about their breast size! How large or small a guy’s penis is varies by his genes. But we know you want a “definitive” answer, so the average size of an erect penis is four to six inches long.

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