Why would a man's nipples be sore?

Related questions

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2. What foods give you bigger breasts?
3. Is gynecomastia a sign of low testosterone?
4. What does it mean when a man's nipples hurt?
5. What can be done about gynecomastia?
6. Will Blue Cross Blue Shield pay for gynecomastia surgery?
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9. Can guys get liposuction?
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Tags

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2. #jogging
3. #breast
4. #nipples
5. #cancer
6. #develop
7. #include
8. #relatively
9. #often
10. #irritated
11. #uncommon
12. #necrosis
13. #runner
14. #bloody
15. #causes
16. #common
17. #mimic
18. #those
19. #benign
20. #nipple
21. #frightening