Things that make you go, "Hmmm..."

Mushy brain time. It's so very hard to concentrate. I fall asleep reading; not really asleep, but getting into a sort of deep meditative state where I can still hear the music playing and am aware of time passing and know I'm sitting rather uncomfortably on my sofa but am gone far enough so that it's a struggle to move; know that feeling?
Long walks in the sunshine (what, it's December tomorrow? You could have fooled me!) help to wake up, but the train of thought just doesn't want to leave the station.
I'm pulling myself together, though. Usually, I would blame the weather, but then I saw my biorhythm, and wouldn't you know, every graph, both in the primary and secondary rhythms, is low; most are between -80% and -100%.
It's almost enough to make me believe in this. At least, I have something to blame - and something to look forward to: the graphs rise again in a few days' time.