Why can I ride one day at 80 degrees and do my normal 40 mile ride and not have any problems with the ride with just a few bottles of water, but three days later with the same temperature and winds I think I am going to get sick about 30 miles into the ride? My time of the ride is the same the food I was eating was the same leading up to the rides.
I usually carry a clif bar with me just in case, but it didn't help with the bonk feeling.
Do I just need some Glucose of some sort to carry? I am usually worried about flats or broken spokes than my body fighting back.
Do others that bonk have the same problem with doing things similar and one time you bonk and the other 20 rides are not a problem and you don't see any reason for the bonk?