a strap on hrm that is synced to the cadence & wheel speed sensor helps gain a better understanding of cals burned. I did a few rides that I could maintain a certain speed on a route I could take predictively & noticed the "calculated" cals burned vs cycle computer using the sensors did not provide the same outcome. The calculated cals provided the higher achieved cals. As much as I would have liked to use the higher output, it would just be foolish. Working harder is smarter in this case. ymmv.
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