Sterner's Tae Kwon Do Academy, Ashburn

The odds of earning a black belt are about one in a hundred, according to Sterner's Tae Kwon Do Academy. That's how many martial-arts students actually stay with it long enough to achieve the honor. The instructors understand the struggle—they've gone through it themselves—and strive to keep their programs engaging and fun. Their tae kwon do, karate, and MMA classes are available for everyone aged 3 and up.