Sleep Images
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lackofsleepsymptoms.com
300px x 450px px | 22.54 kB
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universityhealth.files.wordpress.com
600px x 800px px | 67.85 kB
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childrenhealthcare.net
284px x 300px px | 13.51 kB
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indiatalkies.com
676px x 878px px | 52.73 kB
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funniez.net
382px x 298px px | 7.39 kB
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coolfreeimages.net
400px x 400px px | 37.93 kB
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homeoclinic.co.kr
282px x 400px px | 29.93 kB
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bhls.files.wordpress.com
400px x 400px px | 106.43 kB
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almahoffmann.files.wordpress.com
300px x 500px px | 39.21 kB
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lesenfantsdudesign.com
194px x 545px px | 52.03 kB
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images.clipartof.com
456px x 450px px | 70.32 kB
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From Google Image Search: 'sleep'
Fri Jun 1 11:01:26 2012
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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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