So the new rage is the wrist activity trackers (Fitbit, Jawbone, etc.) does anyone use these? I just ordered the Garmin vivosmart, it seems like to covers what I'd like. I'm curious how these things work for running. I haven't worn a watch to run in a couple years, I don't want to feel any pressure for pace or distance. But I'm thinking this might be nice to keep track of what I'm doing without seeing any stats while I'm actually on the road. Thoughts/feedback?