Daylight Saving Time

Daylight Saving Time Starts Sunday. Here's What You Need to Know

Don't forget to turn your clock forward an hour Sunday morning!

Illinoisans have a chance to "spring forward" Sunday morning, as daylight saving time calls for certain states to set their clocks forward by an hour.

As daylight saving time begins at 2 a.m. Sunday morning, it could be best to set clocks forward one hour before going to sleep Saturday night.

Although many people will lose an hour of sleep going into Sunday morning, the sun will start to set at a later, according to the National Weather Service.

However, forecasters noted that daylight saving time does not add an hour of daylight to the day. Rather, the times people are able to obtain weather charts will be an hour later.

The National Weather Service noted that daylight saving time can be hard on human health, potentially impacting natural sleep cycles and circadian rhythms, or the body's internal clock. Some years have seen increases in sleep disorders, accidents and heart attacks during the first several days after the time change.

Northwestern University circadian rhythm expert Kristen Knutson explained the hour loss of sleep Saturday into Sunday can impair mood, alertness and performance.

“When we experience a time change like daylight saving time or traveling across time zones, our internal biological clocks need to adjust, and it can take a day or two,” Knutson said. “So it is best to avoid scheduling important meetings or events on the Monday or Tuesday after the time change.”

NBC's TODAY show spoke to several sleep experts to discover the best ways to deal with the upcoming time change. Here's what they said.

  • Avoid long naps to avoid the amount of "sleep pressure" present when trying to go to bed at night. If you must nap, take a 15 to 20 minute rest
  • Make sure to get plenty of sunshine to help adjust your internal body clock
  • Avoid foods and beverages that will keep you up before going to sleep at night, such as caffeinated drinks, chocolates and alcohol
  • Avoid exercising too late in the day, as it can keep you awake. Experts suggest moderate-to-high intensity exercise earlier in the day
  • Reduce screen time so the body can fall asleep more easily at night, rather than being confused by the artificial light from a device
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