Sleep
Sleep is a naturally recurring state characterized by reduced or absent consciousness, relatively suspended sensory activity, and inactivity of nearly all voluntary muscles. It is distinguished from quiet wakefulness by a decreased ability to react to stimuli, and is more easily reversible than being in hibernation or a coma. Sleep is a heightened anabolic state, accentuating the growth and rejuvenation of the immune, nervous, skeletal and muscular systems. It is observed in all mammals, all birds, and many reptiles, amphibians, and fish.
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Famous quotes containing the word sleep:
“I pray that Allah may be moved
To drop sleep on her eyes because she loved.”
—Unknown. The Thousand and One Nights.
AWP. Anthology of World Poetry, An. Mark Van Doren, ed. (Rev. and enl. Ed., 1936)
“I have had the accomplishment of something like this at heart ever since I was a boy.... So I feel tonight like the man who is lodging happily in the inn which lies half way along the journey and that in time, with a fresh impulse, we shall go the rest of the journey and sleep at the journey’s end like men with a quiet conscience.”
—Woodrow Wilson (1856–1924)
“Error is to truth as sleep is to waking. I have observed that one turns, as if refreshed, from error back to truth.”
—Johann Wolfgang Von Goethe (1749–1832)