I bonked on the FIRST half of a 35 mile ride on Sunday. (Leave it to me to do things backwards.) I had a 3 hour meeting before we went out, THOUGHT I had had enough to eat, but it became clear I had not. My riding got worse and worse, I felt awful, I was near tears, I was near divorce, it is amazing how the mind will not recognize that the problem is food! (Probably because the judgement is impaired.) We got to a place I could eat, and one hamburger & milkshake later, and a few minutes lay-down in the shade, I was an entirely different rider. It was almost spooky.