Everyone knows that going to bed early is good  our health. Scientists say they have found the healthiest time to go to bed. Researchers  the U.K. Biobank say a bedtime  between 10pm and 11pm is best. They say people who sleep  these times have a lower risk  heart disease. Six years ago, the researchers collected data  the sleep patterns of 80,000 volunteers. The volunteers had to wear a special watch  seven days so the researchers could collect data on their sleeping and waking times. The scientists then monitored the health  the volunteers. Around 3,000 volunteers developed heart problems. They went to bed earlier or later than the "healthy" 10pm  11pm timeframe.
One  the authors of the study, Dr David Plans, commented  his research and the effects of sleeping times on the health  our heart. He said: "While we cannot conclude causation  our study, the results suggest that early or late bedtimes may be more likely to disrupt the body clock,  [negative] consequences for cardiovascular health." He said it was important  our body to wake  to the morning light. He said: "The riskiest time [to go to bed] was after midnight because it may reduce the likelihood  seeing morning light, which resets the body clock." He added that we risk cardiovascular disease if our body clock is not reset properly.