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June 16, 2005
1:08:24/154
Distance speed for the first 9 km, then tempo speed up to 92% of max. heart rate at 12 km, then cool down again for the last 2 km.
I rode slightly slower than usual to and from the train today as well. Matt reminded me yesterday that different levels of training bring different improvements. You can improve your fat burning system and the density of capilaries in your muscles at slower speeds.
Posted by Mark at June 16, 2005 08:20 PM