How Permanent Standard Time Could Save Lives, Explained by a Sleep Expert

'Shifting back and forth between times has been associated with an increased risk of heart attacks and motor vehicle crashes — especially in the spring, says Charles Czeisler, chief of the Division of Sleep And Circadian Disorders at Brigham and Women's Hospital. Shifting to one time could cut down on these effects and increase productivity. But Czeisler says there’s a problem with the Senate’s legislation: It settles on the wrong time.'