![]() How does the time change affect your health?įatal car crashes temporarily jump the first few days after the spring time change, according to a study of U.S. And that circadian clock affects more than sleep, also influencing things like heart rate, blood pressure, stress hormones and metabolism. Sleep deprivation is linked to heart disease, cognitive decline, obesity and numerous other problems. Too much light in the evening - that extra hour from daylight saving time - delays that surge and the cycle gets out of sync. By evening, levels of a hormone called melatonin begin to surge, triggering drowsiness. The patterns change with age, one reason that early-to-rise youngsters evolve into hard-to-wake teens. This circadian rhythm is a roughly 24-hour cycle that determines when we become sleepy and when we’re more alert. The brain has a master clock that is set by exposure to sunlight and darkness. What happens to your brain when it's lighter later? With a third of American adults already not getting the recommended seven hours of nightly shuteye, catching up can be difficult. Some people try to prepare for daylight saving time’s sleep jolt by going to bed a little earlier two or three nights ahead. Worldwide, dozens of countries also observe daylight saving time, starting and ending at different dates. Hawaii and most of Arizona don’t make the spring switch, sticking to standard time year-round along with Puerto Rico, American Samoa, Guam and the U.S. 3 when clocks “fall back” as daylight saving time ends. ![]() RELATED: Ready to spring forward? Facts you may not have known about daylight saving time When does daylight saving time start?ĭaylight saving time begins Sunday at 2 a.m., an hour of sleep vanishing in most of the U.S. “Understand that your body is transitioning.” Eduardo Sanchez of the American Heart Association. “Not unlike when one travels across many time zones, how long it can take is very different for different people,” said Dr. There are ways to ease the adjustment, including getting more sunshine to help reset your circadian rhythm for healthful sleep. Studies have even found an uptick in heart attacks and strokes right after the March time change. It also could harm your health.ĭarker mornings and more evening light together knock your body clock out of whack - which means daylight saving time can usher in sleep trouble for weeks or longer. ![]() WASHINGTON (AP) - Most of America “springs forward” Sunday for daylight saving time and losing that hour of sleep can do more than leave you tired and cranky the next day. ![]()
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