It’s that time of year again, when clocks spring forward and we lose an hour of sleep. Daylight Saving Time arrived at 2 a.m. on Sunday.

While your smartphone and computers likely adjusted automatically, you’ll have to manually change any analog watches and most standard clocks.

Losing 60 minutes may not seem like a lot, but according to sleep experts, it does more than you might expect.

“Given that we are a sleep-deprived society, losing an hour is felt a lot harder that you think,” Ryerson psychology professor Colleen Carney said.

“Difficulties in alertness, they’re going to notice some mood problems and maybe even some sleep problems,” she said.

Carney also said people can try to offset the effects of losing the time by going to bed a half-hour earlier and getting up a half-hour earlier over the next few nights.

While some think the idea of changing the clocks is ridiculous, others say they don’t mind the time change as it means more sunlight and warmer weather is on the way.

This is also the weekend you are being reminded to change the batteries in your smoke alarm and carbon monoxide detector.