I’ve owned a Fitbit One [http://www.amazon.com/gp/product/B0095PZHPE/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B0095PZHPE&linkCode=as2&tag=reseword-20&linkId=UIGXGKK4AOQZOSTI] for 15 months now and it’s great fun. Has it helped me lose weight? Yes and no. Have