I agree with Michael A. who would not want free bacon?

Causes of Bloody Nipples:
When men run, their nipples are constantly rubbing against their shirt. Over the course of a run (especially a long one), this sensitive area can be rubbed to the point of bleeding. It most frequently happens when a man runs in a cotton shirt because the rough material rubs the nipples raw. Because women wear tight-fitting sports bras, this shouldn't be an issue for them. Prevention of Bloody Nipples:
Some men learn the hard way how painful it can be, but it's actually very easy to avoid that problem. Generously apply a lubricant like Vaseline or Body Glide to the nipple area before a long run and you should be fine. Some men will also wear products such as Nip Guards or Band-aids to protect the nipples. Also, for longer runs, make sure that you wear a synthetic-material (Dri-Fit, not cotton) shirt closest to your body. Cotton shirts will cause chafing. Women should make sure their sports bras are not cotton.

I thought athlete's nipple was a myth! GEEZY CREEZY

Geez, I never knew marathons were so horrendous!

No. 15 was probably the result of witnessing 9 or 11.

Most of those are definitely from the Bay to Breakers run in San Francisco… freak show on that run.

Vaseline on the nipples. Works like a charm. That pic made me cringe.

you'd think you would be aware that you are someone affected by nipple chaffing before this point. take precautions people!

do people poop???? i didn't know that was a thing.

Fool! Everyone wants to see a bacon station.

I'm doing doing the 5 borough bicycle race in less than two weeks. I really hope I don't poop myself.