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Everyone knows that going to bed early is good for our
. Scientists say they have found the healthiest
to go to bed. Researchers from the U.K. Biobank say a
of between 10pm and 11pm is
. They say people who sleep between these times have a lower
of heart disease. Six years ago, the researchers collected data on the sleep
of 80,000 volunteers. The volunteers had to wear a special
for seven days so the researchers could collect data on their sleeping and waking times. The scientists then monitored the
of the volunteers. Around 3,000 volunteers developed heart
. They went to bed earlier or later than the "healthy" 10pm to 11pm
.
