It's based upon science. People have lost faith in their blend of superstition and religion....so some smart marketeers are filling that gap with something to believe in.
This is eastern medicine blended with multi-level marketing. So perfect for the 'new age', good for the weekend warrior looking to buy a piece of lifestyle, great for the pseudo athlete who wants to look like a pro who has one, a perfect conversation piece for the conversationally challenged -- it's even cool for the tin foil hat crowd!
The beauty of it isn't what it does, it's what it does for YOU. Not in an empirical sense, but, mysteriously, what it aligns inside each individual. It's like a bio-antenna, and well, there's all kinds of stuff inside you that doesn't always work together perfectly, and this helps your own signals work more efficiently inside you. At least that is what they can claim unofficially. Not sure which ones you guys are talking about, but they all claim something really awesome/epic/amazing and vague like that.
Anyway, just in case you guys find one that's empirically proven to do more than look cool and make a lot of people a lot of money in a pyramid kind of way, let me know!