Wow, your sprint cycles are impressive!! 11mph for 1 min intervals...phew!
I had a question for you about your carb cycling. Do you notice any bloating/water retention when you oscillate between your low or high carb days? I want to give carb cycling a shot, but I remember the last time I tried it, I had a real problem with my body getting so confused that it just held on to a lot of water and I felt so bloated.