A new study recommended that a regular sleep schedule helps to have a better metabolic health. The National Heart, Lung, and Blood Institute (NHLBI) had a survey of more than 2,000 adults from 45 to 84 years old. Each male and female wore a wrist-watch tracker device that recorded their sleep activity for a week in between 2010 and 2013. The study showed that for every one hour difference in the number of hours of sleep every day, there was a 27% chance to have metabolic diseases. It was believed that adults who had the highest difference in their bedtime and sleep period have more possibilities to have diabetes, stroke, and heart attack. The authors of the study suggested that sleeping at the same time every day may have good effects on metabolic health.