I have bonked a couple of times and it was not fun. The first time, I just didn't eat much before or during the ride and at a certain point, I had no power and simply couldn't go any faster. I was on the home stretch, a flat road and could not go over 10mph. "What is wrong with me?" kept playing in my head. I kept stopping to rest but it didn't help. At 3 miles to go, I managed to thumb a ride from some sympathetic folks in a truck that could see I was not well.
The second time, I tried to get by with a Red Bull (first and only time to drink that stuff) at our first rest stop. Several miles later, we had to climb up Skyline Mt. I was doing fine up to a point then I had to pull over to throw up. Then I laid down for a while, ate a Clif bar, then slowly poked my way along.
Eat what you want, eat what you need. Carry extra food, just in case.
And I don't recommend anyone drink Red Bull in lieu of real food.
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