Isn't it all really creepy anyway? Why not add one more device to the list of things that can be used to track or know more about you.
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The clever folks at Jawbone have designed us an easy step toward improving our health. It even buzzes when you've been inactive for too long to counteract the deleterious effects of being sedentary.
It's also married to an iPhone app, so it's easy to monitor your activity, log your food (just take a picture!), etc.
Since it's a wristband, it's easier to hang onto than the fitbit.
I have tried all different kinds of fitness, sleep, nutrition devices and apps, but the Jawbone UP seems to be the most realistic and helpful. This wristband allows me to track my sleep, activity and nutrition. And everything syncs with my iPhone via their app.