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age 13
Girls and boys both start going through puberty, with lowering voices, growing body hair, active sweat glands, and changes in genitals. They are becoming more self conscious but also forming an identity. -
age 14
Boys' muscle mass will increase, as will girls' body fat. They will start questioning school and family rules, and push boundaries to show independence. They also may become moody and disinterested. -
age 15
At 15, adolescents tend to start fighting with family more and turn to their friends for support. -
age 16
At 16, they often want to fit into their friend groups and will change parts of themselves based on their peers. They are becoming more comfortable with their psychical changes as well. -
age 17
At 17, they are developing more of an individual identity, and they are considering the feelings of others as well as making plans for the future. -
age 18
18 is a step into adulthood and is often associated with going off to college. They are gaining independence while also becoming closer to family again. -
age 19
At 19, they are more likely to be focused on their partner rather than friends, and they are working towards goals. They are usually okay with their body image. -
age 20
This is the last step to adulthood, with realistic career goals and formed values and morals -
age 21
At 21 we are at our psychological peak, and exploring full independence and working towards goals -
age 22
At 22, people are often still working towards goals, and there can be changes in their bodies like weight gain and acne. -
age 23
At 23, people are feeling confident setting their own terms and can fully understand abstract concepts. -
age 24
At 24, a person's brain is essentially fully developed and they have typically gained full independence and built strong personal relationships.