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Saturday, December 26, 2015

An efficient sleeping, Human need fewer hours of sleep

Human is a creature who could sleep with efficient, and that is why we need less sleep - seven hours - compared with 14 hours a day for humans' closest relatives animals. Researchers at Duke University compiled a database of sleep patterns of hundreds of mammals, including 21 species of primates.
Researchers at Duke University found that not only do humans need less sleep than chimps, macaques and lemurs, we spend a greater percentage of our slumber in the deeper, more restorative stages of sleep. (Picture from: http://bit.ly/1Yy3Lbm)
They found not only human need less sleep than chimpanzees, monkeys and lemurs, but the percentage of deep sleep was bigger man, the stage is beneficial for health.

This may not be surprising news in the era of electric light and 24 hours non-stop activities, but other researchers in the research, David Samson, says this development begins long before the invention of the electric light. He traced back to the human ancestors who left their residence in the trees and live and sleep on the ground.

The need to sleep near the fire and in larger groups for warmth and safety, possibility makes the ancient human gets the most out of their beds in the shortest time. It also gives more time for other activities, such as learning new skills. *** [EKA | FROM VARIOUS SOURCES | VOA NEWS]
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