Originally Posted by
rubiksoval
That's kind of a big issue.
That's why I don't get why anyone would even think of trying this to get faster, or would try to ride 60+ miles on "just water". Averaging ~276 watts an hour is ~1,000 kJ, and that's not even a lot of watts relatively speaking. You need some carbs if you want to actually ride fast.
I am not advocating it as a way to fuel your training rides but just pointing out that anyone who racks up a fair amount of training could do this if they wanted too. You don't need to of been been on a Keto diet/training regime.