I do much worse as the day wears on. Typically I have more energy upon waking up (although this seems to be a recent phenomenon, i.e, past 4 months). Around mid-afternoon I crash and crash hard, typically having to sleep again. Not sure what this tells you other than each injury manifests itself differently in each person. Likewise, sleeping patterns will differ. I do try to sleep with my head elevated, which reduces the severity of my headaches upon waking.