New research on sleep may have found the best ethic for better rest: simply have a work-out in the morning. Professor Scott Collier, the lead author of a study carried out by Appalachian State University, explained that his team worked with the common understanding that exercise is proven to improve sleep quality; when to do it, however, had not been fully investigated. Researchers with Appalachian State University studied exercise timing, using pre-determined hours - 7am, 1pm and 7pm - for 30 minutes of treadmill exercise. A sleep-monitoring headband was then used to measure sleep time and quality. Those who exercised in the morning spent more time in light sleep by 85 per cent and more time in deep sleep by 75 per cent, compared to those who did not engage in exercise. Professor Collier concluded: "Our research has shown that well-timed exercise can elicit even greater sleep quality. These findings - if the results of the sample hold true for the general population - can help exercisers gain even greater benefits from physical activity."