The teenage years are also called adolescence. This is a time for growth spurts and puberty changes sexual maturation. A teen may grow several inches in several months, followed by a time of very slow growth. Then they may have another growth spurt.
Physical changes in puberty: girls & boys | Raising Children Network
Puberty is the time when your child moves through a series of significant, natural and healthy changes. These physical, psychological and emotional changes signal your child is moving from childhood to adolescence. This usually happens around years for girls and around years for boys. Every child is different. Puberty can be completed in about 18 months, or it can take up to five years.
This section will identify the typical, average ages when youth reach certain developmental milestones; but, it is important to keep in mind that individual youth will develop according to their body's own timetable. As such, a youth's development may not always follow these averages but their development may still be considered healthy and normal. If parents have concerns about their child's growth or development, they should discuss these concerns with their child's health care provider.
Your daughter is asking about getting her first bra, and your son comes home from soccer practice smelling like he's been digging on a road crew all day. What's going on? Welcome to puberty, the time when kids sprout up, fill out, and maybe even mouth off. Puberty was awkward enough when you were the one going through it.