I am presently on extended tour. Yesterday I did 126km in the hills with my 100lbs rig, my best day yet. It was a cool, cloudy day, I had breakfast, ate several bananas, and some junk food. I drank two liter of water and two 16oz sodas. At the end of the day I had dinner, a quart of gatorade and a quart of soda then a couple of hours later I started shivering to the point my teeth were chattering. What is my body telling me? Is this from not eating enough? not drinking enough? Does it have to do with sugar level? Does it have to do with electrolyte or amino acids? Is this "bonking"? How do I prohibit it from happening?
I experienced this once before last summer after a 175km ride. I consulted with an MD about it and all she could say was that "I over did it". I was hoping for a more precise answer, and some recommendations as to how it could be prevented.