Puberty
For most boys, puberty takes about a few years, for White and Hispanic tend to start puberty about a year later than African American boys so you may not finish puberty until you're older. For African American boys it's normal to finish puberty a bit sooner. Teenagers are usually about 10 to 30 centimetres (cm) (4 to 12 inches (in)) taller, 7 to 29 kilograms (kg) (15 to 65 pounds (lb)) heavier, and stronger. He is also able to make a woman pregnant (have a baby).