Bonked

Today's ride was going to be a flat easy 25 miles on a route that I do all the time. The first 12 miles went just fine, but the last 13 were not good. I just ran out of juice. It was warmer than usual, but I had more than enough water. It took every ounce of effort just to crawl along at half the speed I usually go. Now that I'm back home, I would be happy not to move for the rest of the day.

ugh.