NATIONWIDE -- Daylight-saving time ended Sunday at 2 a.m.

Turning clocks back makes for darker days, but you'll get an extra hour of sleep.

Since 1918, most of the country has followed the practice of daylight-saving time, moving clocks forward an hour in the spring and then rolling them back in the fall. The idea is to allow for more daylight in the warmer months and to save on energy bills.

But not everyone is convinced of the benefits.

The original concept was that more evening sun would lead to less demand for lights and electricity, but that argument is now outdated. With central heat and air commonplace these days, temperature — not lighting— is now the main driver of energy use. The biggest supporters tend to be businesses. Retailers say more people shop when there is lighter outside, and outdoor businesses like golf courses benefit.

Most African and Asian nations don't bother with daylight-saving time, while most North American and European countries do, leading to about one half of the world being out of sync with the other. U.S. states are free to decide whether to follow the practice. Hawaii, Arizona, and a handful of U.S. territories don't abide by daylight-saving time. Alaska, California, Oregon, and Montana are considering doing away with the time jump.

Massachusetts is thinking of permanently moving clocks forward by an hour, joining the Atlantic Time Zone with some Canadian provinces. The plan would need other nearby states to sign on, because they would have to make the jump forward as a region. More Americans appear to be growing tired of daylight-saving time. 

In a 2012 survey, 45 percent of Americans supported it, but just two years later that support had fallen to just 33 percent. It's often said that the U.S. adopted daylight-saving time in part to help farmers, but that is one of the big myths. Farmers, in fact, have often led the opposition to daylight-saving time because it left them with less sunlight to get crops to the market. The time change also throws livestock off their normal feeding habits.

But supporters say keep it because of crime; a 2015 report by the Brookings Institution found that on the first day of daylight-saving time, robbery rates fell by an average of 7 percent.

While turning your clocks back, however, make sure to change the batteries in your smoke and carbon monoxide alarms.