The standard rule of Apple patents applies: Just because it's on file, doesn't mean they're going to put it out. But I hope they do, America's fat ass needs this. It's an advanced fitness suite, like Nike + iPod cranked up to 1100. There's hardware that keeps tabs on your heart rate and other vitals, a rewards tracker, and a component for syncing up groups. All of it's connected by an iTunes-like app that tracks your current fitness level, goals, schedule and a whole mess of other stats—it'll even make a workout for you—which it syncs to your iPod or iPhone to follow at the gym.
When you fire it up for the first time, it interviews you to get a sense of your health, even asking about your financial and social status (if they suck, you're stressed, and that does impact health). Then it spits out a regiment, based on how unhealthy you are and how healthy you wanna get. Then you just follow the routine on your iPod at the gym, with the hardware sensors providing real-time feedback on how hard you're getting your ass kicked.