Why are some 12 year old girls taller than boys of the same age

Girls eight years old are heavier than boys in proportion to what they will weigh at 18 or 20. At...

During this year a boy usually grows between 7 and 12 centimetres (2.75 and 4.75 inches) and a gi...

First of all, no. They aren't all supposed to be taller. It's true that often girls have a growth...

Kids tend to get taller at a pretty steady pace, growing about 2.5 inches (6 to 7 centimeters) ea...

In general, boys begin puberty between the ages of 10 and 13 years old and experience growth spur...