Maybe virtual reality games will help people get in shape while having a little fun at the same time. As long as no one tries to market it as a way to get in shape, people will just do it. In virtual reality, you just move. If it's an action game, you instinctively dodge a barrage of deadly lasers. You kneel down to hide behind a crate, only to leap up in a squat-jump to shoot at an enemy behind cover. You're not thinking about it, you're just doing what you have to in order to win. Twenty minutes later, and you've put yourself through an intense cardio workout.