Editor's note: It’s a community that’s both competitive and supportive, in which the participants cheer each other on as they become faster, stronger, and sexier. It’s a tough but convenient workout that can be crammed in around kids and a job. There’s nothing easy about it, but that very toughness can take your mind off life's problems and replace stress with endorphins. Celebrate yourself and your XFit peers with some cool Crossfit wallpapers!