Last Saturday I spent all day helping my son with his tables at a gun show. I only got 4 hours sleep the night before because I woke up early and couldn't go back to sleep. During the show I was literally on my feet all day, not sitting down even once. The result of all this was that I was pretty tired on Monday and skipped my run. I'm doing better with my sleep, but I'm not fully recovered from the weekend. My wakeup PR has increased due to this increased stress and was 52 today.
I had a nice 3.7 mile run today. If I feel ok on Friday or Saturday, I'll bump it up 10% to 4.1 miles.