Hi Guys... I have a question... I'm 18 years old, and for several years I'm intrigued about my nipples...
http://i.imgur.com/nkSq9sS.jpg
As you can see in this image, right after I lift my shirt, my nipples are like this first picture... A few seconds later, they are like the second picture... This is normal? Should I be concerned?
Thank you!