Nothing ruins a childhood like being told that martial arts will not turn you into a Teenage Mutant Ninja Turtle. Somewhere on the other side of all the stretching and practice, one's spine should at least begin to turn brown, if not harden into a half-shell.
But karate isn't about chopping your little sister with the edge of your hand or learning to use swords as urban defense tools. It is more about discipline, fitness and optimizing motion in defensive situations.
For those more interested in the self-defense, mental and physical rigor aspects of karate, there are free karate lessons to be had at Idaho Martial Arts in Eagle. The lessons run from 5-7 p.m. for various ages.