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Now you can exercise by proxy, by staring at the graphs of the workouts Blauw Oog and I have on Saturday nights. (Lots of beautiful women on the road as well in Utrecht on a dark evening, no need to worry about our social life.) Anyway, this graphic was made during the 5,5 km run described below, using a Philips-Nike MP3RUN, which is an obscenely expensive device consisting of a) an MP3-player, b) a Bluetooth enabled sensor which attaches to a shoe and tracks your progress. I've been testing it for quite a while now, as I had to write a review about it in NRC Handelsblad (a national Dutch quality newspaper). In that time, I've found it to be quite accurate. The only downside is the price tag of about 350 euros, which is excessive for a 256 MB player. Even if it does produce graphics like these:

(The parts where we slow down reflect time spent waiting at busy intersections.)
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