Bodybuilder, never used steroids, having puffy nipples for so long. when pressed inwards feels there is hollowness under areola , no pain, no lumps.

Normal variant: Hard to be certain what the problem is without proper examination but on the onset it doesn't sound life- threatening. I'm a bodybuilder myself and nipples can be puffy for any number of reasons. When did this problem begin? How are your father's nipples? Do you have family history of breast disease? Is there any pain about the breasts?