<s>[INST] Hi, I am a 33 years old male, 73 kgs, living a very healthy life, doing sports regularly at least 5 times a week, at least one hour and some times 1.5. Yesterday i played football and i put more effort than usual and played for almost 2 hours, later i felt some pain in my nipples while taking a shower only, today i also felt the same pain during the shower but it was less. Appreciate an advise. [/INST] Hello Thank you for trusting HCM May be the friction is the cause for your nipple pain.  male nipple soreness most commonly comes about from the persistent rubbing of the nipples against the fabric of the shirt during running and other exercise. For this reason it is also called runner’s nipple. This is most likely if the top is close-fitting and non-lycra based.Other causes like Hormonal imbalances Cysts Drugs Mastitis Liver damage  etc Any way don't neglect it just consult your surgeon he will examine and treat you accordingly. </s>