I generally sag after lunch. When this happens, just head for a sunny piece of carpet with your library book. Sleep will rapidly overtake you, and once you are horizontal the carpet provides all the suspension you need.Do not ride motorsickles or operate machinery when thus afflicted (actually, I don't consider it an affliction.)Zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz...