Do you use a fitness tracker or activity monitor like Fitbit, Jawbone, Nike Fuelband, etc? I am thinking about buying the Bodymedia Link armband. This one isn't worn on the wrist, its worn on the upper arm. I owned one of their old versions about 4-5 years ago and wore it regularly for about 2 years. I thought it was great. It really helped me raise my activity levels and get accurate data on how my workouts and activity were progressing. I lost it one day while traveling though. Last year my girlfriend bought us both the Fitbit Force, it is like their Flex but has a digital display. She loves it but I wasn't a big fan. I thought it overestimated my step count and activity levels and didn't think it did a good job measuring calorie burn since it was only based on motion. The BodyMedia device uses multiple sensors to measure calorie burn like heat levels in the skin, etc. The Force was recalled by the company though because it apparently caused rashes for some people. I didn't have that problem but I sent it back since it wasn't going to be serviced any longer. I was looking at the Jawbone at the Apple Store the other day. I like the design but I'm skeptical as to its accuracy. Does anyone have it? You can measure the step count accuracy pretty well on your own but does it add steps if you are just moving your arm around? Do you think the calorie expenditure is accurate? I hear conflicting things from some people I've talked to and things I've read. What about any of the other bands? Any that you recommend? It sounds like Apple may be unveiling an iWatch soon that has activity monitoring in it. My workouts usually focus around weights, compound movements, and short bursts of things like rows or sprints. So I think calorie burn measured simply by step count or general movement of the gyroscope would miss a lot. My experience makes me bias to the BodyMedia device with its multiple sensors but I'd love to wear something on my wrist instead of my upper arm if I could be confident of its accuracy.