The act of changing clocks twice a year is economically and socially disruptive and cancels out any benefit. Actual energy savings are inconclusive. DST can disrupt morning activities, timekeeping, meetings, travel, billing, recordkeeping, medical devices, heavy equipment, and sleep patterns. School children (and teachers) are groggy while adapting, and spend more time traveling to school in darkness. U.S. Department of Labor and Mine Safety and Health Administration data shows 5.7% increase in injuries and 68% more workdays lost after the change to DST. The U. S. National Highway Traffic Safety Administration cited sleep deprivation as the most likely cause of a 17% increase in accidents on the Monday following the time change.



