Polar S-410 Gives a Rough Estimate of Energy Expenditure By Jesper Bondo Medhus / September 4, 2008 Polar S-410 Gives a Rough Estimate of Energy Expenditure Read Post »
How To Use a Heart Rate Monitor for Cycling By Jesper Bondo Medhus / August 11, 2008 How To Use a Heart Rate Monitor for Cycling Read Post »