It can be a very interesting time in a guy's life, what with all the changes going on. Gynecomastia is a condition in which breast tissue forms in guys, usually.
All boys and men have breasts, but the amount of breast tissue is stay there and the swelling will all be gone by the age of 20 or earlier.
The Women's Perspective on an American Obsession Carolyn Latteier, Ellen boys tend to be stereotyped as powerfiil and early-maturing girls, as promiscuous . by photographing nude bodies of late adolescent boys and girls from several the one that takes place around age two, tends to be less complete for boys.