EARLIER BEDTIME RULES

Going to sleep between 10pm and 11pm is associated with a lower risk of developing heart disease compared with earlier or later bedtimes, according to a study published by the European Society of Cardiology. The study included 88,026 individuals. The average age was 61 years (range 43 to 79 years) and 58% were women. “The body has a 24-hour internal clock, called circadian rhythm, that helps regulate physical and mental functioning,” said study author Dr David Plans of the University of Exeter, UK.

“While we cannot conclude causation from our study, the results suggest that early or late bedtimes may be more likely to disrupt the body clock, with adverse consequences for cardiovascular health.”