I’ve always been a worker-outer. But lately, as I’ve spent more and more time on the cardio machines at 24 Hour Fitness, I can’t shake feeling that I’m just a hamster on a wheel in a vicious human experiment. To combat my paranoia and possibly find a mentally healthier hobby, I’ve decided to scope out what else LA has to offer in a weekly series, “Fitness for the Easily Bored.” Today, I begin with:......