Pubescence
Pubescence is the stage of life (roughly between ages 12 and 25) where an individual is maturing mentally, physically and sexually into the adult phase of life.
It is a time where the individual is shaping their eventual adult identity in regards to interests, abilities, skills, relationships, and sexual identity.
This is a time for experimentation and shifting tastes and interests where social life can often take priority over family, school and work and where fitting in with the peer group is considered highly important. Lots of brain development and body changes occur during this phase of life.