I remember watching the classic cartoon starring, IIRC, "Captain Hemo," in which one's circulatory system was explained. The various pieces of your body that needed blood got bits of it regulated depending on need. If you needed blood to your muscles, the gut got cut off, explaining cramps while swimming soon after eating, for example. This has since proved to be pure hokem. My body, however, seems to not have gotten the memo. A large meal invariably means loss of higher brain functions and I drop into blissful sleep. (Unless, of course, I want/need to sleep. My body won't be toyed with in that way. Oh, no.)
And, as I was just remarking to fredcritter, it's so nice when work is busy enough that the mundane needs of the body like sleep and hunger fall to the background in the rush to get things accomplished by their deadlines. Tonight is not such a night, however. Dribs and drabs of work come by, allowing long periods of idleness in which sleep creeps up like a cat to leap up in your lap, purr warmly and lull you into complacency.
I can only try to hang on as best I can. The fine folks over at http://www.dooce.com keep the comments on her daily photo going all night sometimes. If I can engage in witty repartee with Australians and Indians as they read about Heather's recent snow-boarding adventures, I might just make it through the night.
We shall see.