The average American loses 40 minutes of shuteye each year on the night after DST begins, according to sleep researchers at the University of Michigan. While you may think you make up for that lost time when we “fall back” later in the year, researchers found that survey participants didn’t sleep significantly more when they gained an hour in October…which brings the typical American to that cumulative loss of 40 minutes of sleep per year. The researchers’ report, used data from the Bureau of Labor Statistics analyzed the sleeping patterns of 14,310 working Americans.