Scott Craven and Ashley May and Doyle Rice USA TODAY NETWORK Published 2:02 PM EST Mar 6, 2019 Editor’s note: Part of this story from The Arizona Republic was published in 2017. On Sunday, the vast majority of Americans will lose an hour of sleep as clocks are set ahead for daylight saving time. Arizona and Hawaii do not observe daylight saving time, which was first enacted by the federal government March 19, 1918, during World War I as a way to conserve coal. Other non-observers of daylight saving time are American Samoa, Guam, Puerto Rico and the Virgin Islands. While most cellphones and other devices take care of the time change automatically, traditional clocks need to be adjusted manually when the time changes at 2 a.m. Sunday. (Yes, that makes it 3 a.m.) How daylight saving time messes with your body Heart attack or stroke. According to a study led by a University of Colorado fellow in 2014, when Americans lose one hour of sleep in the spring, the risk of heart attack increases 25 percent. When the clock gives back that hour of sleep the risk of heart attack decreases by 21 percent. (The limited study looked at hospital admission data in… Read full this story
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