People are always on the look out for the next big thing in fitness tech. And, you know what, companies are keen to queuing up to give it to them. So, please welcome Lumen to the table! Or the weight rack, I guess. Created by an Israeli company and currently funding on Indiegogo, the Lumen is a device that tracks your metabolism through your… wait for it… breath. Breath? You’re damn right. When I first heard about it, I thought measuring metabolism through your breath was complete and utter crap. Turns out – and listen closely here – it’s a…

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