Others, like high fat meals (think cheeseburgers and BLTs) provide more sustained energy, but require our digestive system to work harder, reducing oxygen levels in the brain and making us groggy.
When she happened to fetch out a long word which had had its day weeks before and its prepared meanings gone to her dump-pile, if there was a stranger there of course it knocked him groggy for a couple of minutes, then he would come to, and by that time she would be away down wind on another tack, and not expecting anything; so when he'd hail and ask her to cash in, I (the only dog on the inside of her game) could see her canvas flicker a moment -- but only just a moment -- then it would belly o
Must "I must go to bed now or else I'll be tired and groggy all day tomorrow.
