It started by my sleeping in longer than I had expected. Clearly, I needed the rest. Even when I pulled myself out from bed, I felt that I could have easily laid back down and fallen asleep again. I had a number of things that I was going to try and accomplish today, but that slow start made me rethink and then discard those plans.
Sure, this might put me a bit behind where I wanted to be, and it means that I will need to do a bit of work on Sunday (something that I usually, although sometimes unsuccessfully, try to avoid). However, it was a comfortable day. While I still feel tired, I'm glad I did some recharging.