He awoke, opened his eye. The room meant very little to him; he was too deeply immersed in the non-being from which he had just come. If he had not the energy to ascertain his position in time and space, he also lacked the desire. ... In utter comfort, utter relaxation he lay absolutely still for a while, and then sank back into on the the light momentary sleeps that occur after a long, profound one.
Paul Bowles, The Sheltering Sky
sleep