Fat - Carb ratio on rides

Hi there,

How is Fat to Carb ratios on rides measured. I done a ride with my friend yesterday and notice his ride was much more Fat g burned than me. My ride was much more Carb g burned and higher difficulty score. He’s a lot stronger rider than me but my HR was pretty low I though I would have been more Fat g burned.
Thanks

Track Fat and Carb Utilization – Xert (baronbiosys.com)

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Search results for ‘fat carb’ - Xert Community Forum (xertonline.com)

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Thanks for that :+1: