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London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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@slimlavud
Thanks DFP. Will a Smartphone measure my speed, elapsed time, pedalling cadence etc or just make me even more attractive to women? Or is this something to do with measuring one's heart rate - I normally rely the woman I am with to tell me if I am having a heart attack or other episode...