so i've been doing some reading and am confused after seeing a bit of a mixed response. my question is, if I do an 80 mile bike ride, at a moderate pace, what am i burning for energy? i understand its a mix, but is it more fat, protein or carbs?
and the second part is how much can i effect the composition of the fuel used by diet?
i know this isn't the best for building muscle but i have specific training for certain goals.