Experiments with carb loading:
First beat athlete's fat burn traces on the two Half Marathon Races.
Whistling with the heart at the Carlsbad Half: During a 20 minute segment around mile 2, I hit my highest cadence, highest speed and the lowest breathing rate. More surprisingly, I also generated a single peaked heart rate variation AR spectrum (bottom right) of the sort that appears when meditating and rarely at other times for this long
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