Millions of Americans are struggling with the change from Daylight Saving Time as the work week begins.
People in every state except Arizona and Hawaii set their clocks back an hour yesterday.
Today, according to studies in the U.S. and Australia, they'll try to overcome the effects of insomnia or sleepiness, depression, and a rise in suicide rates. Safety risks this time of year include higher crime rates and more pedestrian deaths because it gets dark earlier.
When Daylight Saving Time starts again in March, the risk of heart attack is as much as ten-percent higher and the risk of stoke is eight-percent higher in the two days after the clocks are set ahead an hour.
Lost sleep will result in a 17-percent jump in traffic deaths the Monday after the shift and workplaces will see more injuries and lost productivity.