Yes, that would be interesting to know.
Good luck with that marathon, "one step at a time" :D
Maybe I should try fast more often to feel the difference, although I'm into cross country mountain biking, which basically means one and a half hour of flat out racing. So, I'm not really that dependant on fat burn for energy.
If that's your first marathon, then I guess we'll see a post about "Coder does Marathon!" soon.
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