The case for daylight saving time?

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It's time for that annual ritual that USA Today calls the "slumber bummer" – most Americans this weekend (at 2 a.m. Sunday, to be exact) will set their clocks ahead one hour.

Experts are conflicted about the effect it has on our biological clocks, USA Today reports, although a mattress company survey says about 61 percent of Americans say changing the clocks has an effect on them.

WCCO talks to Dr. Conrad Iber, medical director of Fairview’s sleep program, and offers tips for avoiding a case of the Mondays next week. (Exercise, eat right, and plan to wake up earlier both Saturday and Sunday.)

KARE 11 notes that the U.S. Department of Transportation regulates daylight saving time and offers three justifications for it:

1. It saves energy. Because it's lighter later in the day, people spend more time outside in the evenings, and less electricity is used.

2. It prevents traffic injuries. More people travel to and from school and work and complete errands during daylight hours.

3. It reduces crime because people are out during the day rather than at night.

One blogger at Scientific American is not buying it, and he makes a case against the practice. Among his points: "The proportion of total energy that is used for lighting is miniscule compared to other, time-independent uses like factories, computers, nuclear plants, airport radars, and other facilities that run 24/7."

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