A new study conducted by researchers from the University of Duke has come to the conclusion that humans sleep less but better than mammals.
The study registered 2,000 hours of sleep and used mammals and around twenty species of primates from lemurs and chimpanzees to humans. The research revealed that humans need only 7 hours of sleep every night, while other primates need between 14 and 17 hours of sleep. The short amount of time people need to sleep indicates that our sleep is the most efficient.
Another difference that has been noticed is that primates like lemurs or mongoose spend around 5% of their sleep in a dream state while humans’ sleep state takes around 25% of our sleep.
Not only we need less sleep, but we also spend more time in the deep, recuperative sleep stage. David Samson, one of the people who conducted the study says that this has nothing to do with the electric lights or with the stressful every day activities. To prove that he exemplified a study done in countries without electricity like Namibia and Tanzania, which concluded that they don’t sleep as deep as we do.
He declares that it all started with our ancestors who started living in big groups around the fire instead of living in the trees. The feeling of safety and the heat provided by the fire combined with the desire of learning new survival skills allowed people to get a short but extremely restful sleep.
So the next time you’ll complain about sleeping too little keep in mind that you didn’t really need that much sleep anyway.