Adolescence is the period of life when the body undergoes changes, leading to reproductive maturity. It typically begins around 10-11 years of age and lasts up to 18 or 19 years of age. This period is considered a stage of significant growth and change because both physical and mental development are rapid and profound, transforming a child into an adult. Hormonal shifts drive numerous noticeable alterations in the body, mind, and emotions.