So....This has happened to me before while running or doing other cardio. My shirt rubs against my nipples and rubs them raw, they bleed and then scab over for a few days. I had a white Tank on today, and it looked like I was lactaiting blood when I was done. No, my nipples are not big, but really? This sucks, it has only happened like 4 times in my life but it is embarsssing. Is it the shirt? Does this happen to anyone else? Any ideas? Please save the wise cracks, chances are I may have heard them today.