Originally Posted by
PDKL45
Once you are into a good routine, such as eating from 12.00pm until 8.00pm with predictable efforts, like daily commutes, your body adapts to burning fat if it depletes its glycogen stores and you don't bonk as hard or get all lihht headed.
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I've done intermittent fasting for the last 9 months and lost about 15 lbs, but again, pace 100% dictates what you can do while fasted or taking in less carbs. I can go out fasted and ride 2 hours very easy, but I've also bonked numerous times when going just that little bit too hard.
I've bonked in just 30 minutes time multiple times when really depleted (generally after not refueling enough from a big ride the day before).
Even with intermittent fasting, if I'm planning a bigger ride the next day, I either have to consume additional carbs and calories during the "window" or, in the event of a ride with much more intensity, forgo the fasting and eat a substantial amount before and during the ride.
Why? Because your body needs carbs to go fast.