Study has found a Brazilian community with 'pre-industrial ' sleeping habits . They prefer to rise at 6.30am and go to sleep , on average , at 21.20pm . This is despite having access to the same electricity as urban neighbours . Nearby urban residents prefer to rise 07.15am and go to bed at 22.20pm . Experts said this is because the rural group predominantly work outdoors . They therefore have similar 'natural ' cycles as our pre-industrial ancestors . The community was discovered in the small town of London . Researchers now plan to study this group to learn more about how a move away from the natural rhythm could be damaging our health .
Study has found a Brazilian community with 'pre-industrial ' sleeping habits . They prefer to rise at 6.30am and go to sleep , on average , at 21.20pm . This is despite having access to the same electricity as urban neighbours . Nearby urban residents prefer to rise 07.15am and go to bed at 22.20pm . Experts said this is because the rural group predominantly work outdoors . They therefore have similar 'natural ' cycles as our pre-industrial ancestors . The community was discovered in the small town of Baependi . Researchers now plan to study this group to learn more about how a move away from the natural rhythm could be damaging our health .