This document provides information about crystal meth (methamphetamine) for teens, including what it is, why people use it, physical and mental health effects of its use, dangers of meth labs, and how to help a friend who may be using. It describes crystal meth's many street names and explains that it is a powerful stimulant. The document outlines both short-term and long-term physical effects on users, including increased heart rate and risk of stroke. It also notes the environmental and health risks of meth labs and how to respond if encountering one.