Prepare to lose an hour of sleep this weekend.
Sunday marks the beginning of Daylight Saving Time, when millions of Americans set their clocks forward one hour. Starting March 12, clocks should be set one hour ahead.
Oregonians have been setting their clocks forward each spring since 1962. America spends about 65 percent of the year in Daylight Saving Time, starting the second Sunday each March through the first Sunday in November.
Proponents of Daylight Saving argue the residents prefer more daylight at the end of the workday, and have said the time change decreases energy consumption, though the actual effect on energy use is disputed.
Proponents have said Daylight Saving is good for physical and psychological health, and is good for businesses.
Opponents say that Daylight Saving can be detrimental to your health. Research in 2014 showed a 25 percent jump in heart attacks on the Monday following Spring Forward, compared to other Mondays during the year. The time change has also been linked to increased risk of car crashes due to groggy drivers at the wheel.
Daylight Saving Time was about a month shorter until 2007, when Congress extended the time in 2007.
Not everyone observes Daylight Saving Time. Arizona and Hawaii don't participate, neither does Puerto Rico, American Samoa or the Virgin Islands.