And, guys who develop slower and are smaller than other boys may feel really stressed about it.On top of that, boys’ voices become deeper and may start to crack.“Boys are slow to grow but then they catch up later,” Legano says.
It breaks down like this: Girls grow very fast (this could start as young as age 8), get their periods, their growth plates fuse, and they stop growing. That’s why around the 8th grade you have taller girls and smaller boys.Boys usually begin puberty between the ages of 10 and 15. Starting at about age 12 or 13, and as early as 9, hormones called androgens bring on a number of physical changes, says Lori Legano, MD, assistant professor of pediatrics at New York University and attending physician for the adolescent clinic at New York's Bellevue Hospital Center.One of the first things guys start to notice is that their testicles and scrotum (the sac located underneath the penis) start to get larger. -dial tone- BOY GOES TO HOSPITAL, AND TO ROOM ..646, BUILDING A, SUITE 3. Girl: I just wanted to see if you felt about me the same as I felt about you.