Today I ran some sprints. It consisted of 8 repeats of running for one eighth of a mile at a pace of 7 minutes per mile then walking while I waited for the heart rate to drop below 105 beats per minute. I had trouble reaching the speed and I was about dead by the end of a lap, then I had trouble getting my heart rate down to 105 during the recover phase. The next time I do this exercise I need to move the heart rate up a little, perhaps to 110 beats per minute.
It was cold this morning! The temperature was just above freezing and the wind was about 5 miles per hour out of the north. When I came around the back corner of the track and was running into the wind it about froze me. Boy was it cold.
I have a clue about the my high heart rate at the beginning of a run. Today I had trouble getting a good reading, I think it was because it was so cold I was not perspiring enough to make contact with the strap. Perhaps that is why my heart rate has been high at the start of a run. I will have to watch it in the future.
Here is the results:
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