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Early risers are people who
wake up early in the
. Their body clock causes them to get up while
of us are still in deep sleep. Researchers at the University of California said early risers could have some
DNA from Neanderthals – our
who lived over 40,000 years ago. Neanderthals lived in
parts of Europe and Asia. They woke up earlier to hunt for or gather
as the sun rose. Researcher Dr Tony Capra said: "At higher
it is beneficial to have a body clock that is better able to anticipate and change to match the changing
light levels." He added: "Having a 'faster' body clock…makes
more likely to rise early."