Don't forget to adjust your clocks before going to bed Saturday night, otherwise you'll be an hour late to everything Sunday.
Daylight saving time begins Sunday, so you'll essentially be losing an hour of sleep at 2 a.m.
If you're an early bird, you might notice things will be a bit darker when you wake up. However, that means it will be light out longer into the evening.
And as it turns out, that one hour difference can have an impact on your health.
The bad things
First of all, you're losing an hour of sleep so you might be a bit more tired than usual. So be prepared to make an extra coffee stop or two.
WebMD says that affects night owls more than people who wake up early. According to a study, people who tend to go to sleep later reported feeling more tired during the day for three weeks after the time change.
And when you go back to work, those first few days you might be a bit less productive, WebMD says. That's because you might be slightly sleep deprived.
On top of that, there are more heart attacks and strokes the Monday after daylight saving time. Researchers link that to sleep cycles, as well.
The good things
On the bright side (literally), it stays lighter longer so people have more time for activities after work. A study found people burn 10 percent more calories during daylight saving time.
And if you suffer from seasonal affective disorder – which is usually made worse by lack of sunlight – the longer days can help lower symptoms of depression.
Finally, it's a sign spring and summer are on the way. We've already had several tastes of spring this winter – from 60-degree days to rainstorms – but the first official day of spring is coming up on March 20.
Fire departments also say now's a good time to switch out your smoke alarm batteries.
Why we do daylight saving time
According to Vox, daylight saving time started as a way to conserve energy during World War I. It became a national standard in the 1960s.
But the energy savings are not huge. The Department of Energy has said it saves about 0.5 percent electricity.