So, Velogirl, what you're saying is that the answer to his question is "the rest of the day," yes? And then, when he wonders what's the point of the biking, the answer is "to build muscle and what all that will burn the fat," AND "to build strength to cart it all around while we're burning it!"

I was sharing the information about how we need to keep "carbing" while we ride -- run out and we're done for, and then he wanted to know about the fat thing. The idea that "we start burning fat" part way into the session, well, that makes sense to a point -- but then, there would be no such thing as bonk, at least not for a lot of us, because there's just no way I could ride long enough to run out of that fuel!!!

Karen in Boise