WASHINGTON, March 13 (UPI) -- The United States returns to daylight saving time Sunday with health experts saying many people don't fare well with the hour earlier wakeup.
Daylight saving time, in which the clocks "spring forward" from 2 a.m. to 3 a.m., begins Sunday and ends Nov. 7 with a return to standard time.
For nearly 20 years, daylight saving time began the first Sunday in April and ended the last Sunday in October. In 2005, however, Congress changed the date, lengthening daylight saving time by four weeks in the name of energy efficiency, The Washington Post reported Saturday.
While many people like having more daylight at the end of their work day, the onset of daylight saving time contains health hazards, the Los Angeles Times reported this week.
The number of serious heart attacks increases by as much as 10 percent during the first three workdays after the start of daylight saving time and traffic accidents jump by as much as 11 percent on the first Monday after the clocks spring forward, the Times reported.
