Physical Changes During Adolescence Adolescence is the time when young people go through the physical, emotional and social changes that end in adulthood. Puberty refers to the physical changes that occur during adolescence. During puberty, secondary sex characteristics appear, and the reproductive structures mature. Puberty begins because male and female hormones are released into the bloodstream. During puberty, both boys and girls will grow quickly, perspire more, have body odor and develop oily skin and some pimples.
Many adolescents have concerns about whether their experiences are normal.
Girls may worry that one breast is larger than the other. Boys may worry that their penises are too small. Such concerns are common and can be easily addressed by accessing valid sources of information, such as knowledgeable adults, books, pamphlets, health care providers and Websites. Libraries contain textbooks and other print resources that provide accurate information. Health care providers are also valid sources for information about sexuality.