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Everyone knows that going to bed early is [well / good] for our health. Scientists say they have found the healthiest time to [come / go] to bed. Researchers from the U.K. Biobank say a bedtime of [among / between] 10pm and 11pm is best. They say people [who / what] sleep between these times have a lower risk of heart disease. Six years ago, the researchers [collected / collector] data on the sleep patterns of 80,000 volunteers. The volunteers had to wear a [special / specially] watch for seven days so the researchers could collect data [in / on] their sleeping and waking [timing / times] . The scientists then monitored the health [on / of] the volunteers. Around 3,000 volunteers developed heart problems. They went to bed earlier or [lately / later] than the "healthy" 10pm to 11pm timeframe.

[One / Once] of the authors of the study, Dr David Plans, commented on his research and the [affects / effects] of sleeping times on the health of our [heart / hearty] . He said: "While we cannot [conclude / conclusion] causation from our study, the results suggest that early [nor / or] late bedtimes may be more likely to disrupt the body clock, with negative consequences for cardiovascular health." He said it was [important / importance] for our body to wake up to the morning [lightly / light] . He said: "The riskiest time to go to bed was after midnight because it may reduce the [likely / likelihood] of seeing morning light, which resets the body clock." He added that we [risky / risk] cardiovascular disease if our body clock is not reset [property / properly] .