Serious bedhead. Judging by the way I feel there were no more than 3 hours of decent quality sleep in that 4.5 hours. That isn't too bad - although this afternoon's squats should be interesting.
Following nap
One of the things I'm noticing with this test is that I'm getting quite tired by around 19:00 (the usual nap time); making the nap more than welcome at that point. This evening was certainly no exception, and waking after 90 minutes was frustratingly soon.