So I did the second day of Couch to 5K yesterday. I'd been walking around on Monday and yesterday with zombie legs. But using the same (probably stupid) reasoning that got me to the gym on Monday, that warming up the muscles and stretching might make them feel better.
I took it fairly easier. Every time there was one of the running times I thought about not running too fast. It took two or three minutes off of my time, but it made a world of difference. I wasn't wheezing at all, my face was only moderately pink, and when the sonnofabitch told me that I should be feeling the effect of running but not be out of breath, that was actually almost true. Yesterday there was apparently a hurricane passing through so I was running face first into the wind, and I had just saved a trash barrel that had been rolling across the street and then had to run across a few streets during one of the rest periods, so I maintain I had a good reason for being out of breath. And I didn't need to spit even once. I also didn't collapse when I got home and was able to stretch out. I felt loads better after the run and energized. I wasn't hacking all day yesterday and I didn't need a nap any more than I usually do.
Another plus? I'm pleased to report that my legs are significantly unzombiefied. Though I also went to yoga to stretch out this morning, and I know that helped tons. So, live and learn.