Note
(rest day)
Did an interesting experiment the other day. My Garmin Forerunner 10 seemed to run out of juice very quickly a couple of times on the recent trip to Europe. So, I charged it up, got a satellite signal and started, and just left it on my desk, near a south-facing window. It lasted 6 hours, 50 mins before fading out, so I guess the battery is OK. But here's the interesting part: it said I had moved 5.06 miles! I uploaded the track, and you can see data points as far away as 100m from my house, with the track being a general morass of angled lines. Makes you wonder.