I think that God in creating Man overestimated his ability.
I think Monday is killing me. The process started on Sunday, but it took the full weight of Monday to do the job.
Tuesday will roll around and I'll flutter back to life a bit, just enough to make it to Wednesday, which will catapult me into Thursday. With Thursday comes a surge of energy leading me into Friday, from which I sprint into Saturday and so sail into Sunday. And then, Monday. Oy.