Running: High heart rate during first 10 minutes
Hey all, I recently invested in a HRM (Garmin 910 xt package) and have been tracking zones as part of training for a marathon later in the year. I've noticed that the first couple of km of any given run, my heart rate is measured in Z4-5, at the high 160s and 170s, then it drops back down into Z2-3 suddenly. It's very…
