My wakeup HR was 53 this morning, only 1 higher than yesterday, indicating that my body is adjusting to the 8 miler I did yesterday. An increase of several beats would indicate my body was tired.
My plan is to run three 8 milers for the next couple of weeks, and then to take two weeks to move my Saturday long run up to 10 miles.
Today and tomorrow are rest days. I'm looking forward to another 8 on Saturday.