Originally Posted by
work4bike
BTW, if one does "bonk" you can expect the glucose numbers to be fairly low; however, you can also expect a sharp rise in glucose levels during intense exercise. I know this from experience, because I got a blood test directly after a hard ride and my level was about 110 -- and many other readings were off the chart, which was after fasting for over 12 hours. I retook the test a couple days after and all was normal.
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Perhaps this explains getting a "second wind?"
I do know that we have a tremendous store of energy in fat, muscles etc., but I do not know the speed at which that all happens. Nor how fast food carbs are absorbed, or else you could keep eating and ride forever.