I'm out for a long run today, and I'll be working on keeping my heart rate down - not easy when I'll be running up and down some very steep and technical trails. ;-)
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I'm out for a long run today, and I'll be working on keeping my heart rate down - not easy when I'll be running up and down some very steep and technical trails. ;-)
yes and this is the point, heart rate is the only controllable data to train on trails ad technicality makes speed obsolete.
Enjoy your run!