Spring forward time: Daylight saving time begins March 12; Congress weighs switch

Dr. Cathy Goldstein said to avoid the abrupt time shift conflict, policymakers would have to choose standard time as permanent, where it's light in the morning and dark at night. When the clock on the wall abruptly shifts by one hour during daylight saving time, the biological clock remains the same, which increases health risks and accidents when the annual leap occurs.