Something strange happened tonight.
Last week I decided that I would start a loading phase at the gym. This means training heavy 10+ hours per week (and lots of added recovery time, extra sleep and so on). Therefore, I was only drumming for about an hour each evening. I didn't bother warming up, I just jumped into reading the Gary Chester book with a system I came up with. I'd also spend 10 or 20 minutes on improvising over the Thomas Lang Cooridnation Matrix ostinatos I already know.