A teenager is a person between the ages of thirteen and nineteen. Once someone turns twenty, they're no longer a teenager.

Being a teenager means navigating a particular phase of life between childhood and adulthood. Teenagers develop stronger reasoning abilities and start thinking more independently. They often care deeply about what their friends think and spend more time with peers than with family. Physical changes happen rapidly during these years: voices deepen, bodies grow taller, and adult features emerge.

Teenagers face unique challenges and freedoms. They might get their first job, learn to drive, or take on more responsibilities at home. At the same time, they're still learning how to manage emotions, make wise decisions, and handle increased independence. A teenager might handle some situations with impressive maturity while still needing guidance in others.

The teenage years have a reputation for being both exciting and difficult. Teenagers sometimes clash with parents over rules and independence. They might feel misunderstood or struggle with confidence. But these years also bring meaningful friendships, new discoveries, and the satisfaction of growing capabilities. Most adults remember their teenage years vividly, perhaps because so much growth and change happens during this distinctive period of life.