Maybe my heart rate is 155 when I am running by 4:15/km.
I have to keep my heart rate 155.
Perhaps the max heart rate of mine is 180, so 155 is 86%!
Keep 86% when running!
Today's training: 20k pace run 4:36/km & 2km jog
monthly mileage for March: 369km
Thursday, March 29, 2012
155
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