I've experienced a runner's high -- also, see this link -- many times but today I found out what a real runner's low feels like. I suppose it's a lot like hitting the wall in a marathon.
I'm guessing that a combination of weather (75° and 85% humidity), not sleeping really well this week, and, probably some dehydration resulted in what felt like my worst run EVER! I didn't feel great when I started -- thought about cutting it short several times even at 2.5 miles. But, I pushed on and was OK, if not great, right up to the 7.5 mile mark. At that point, I just imploded. From there, I walked about as much as I ran. Was supposed to do 11 but ended up with only 9.9 -- it would have been shorter if I had been closer to home.
Oh, well. There will be another day.
According to Weird Conversions, I weighed the same as 17,475 sheets of paper today after running the equivalent of the length of 1,945 'weinermobiles".
Run well, y'all,