HARTFORD, Conn. -- Come this weekend, we'll have an extra hour of sunlight in the evening. This sounds great, but researchers say that shifting our internal clocks twice a year might affect us adversely -- from more traffic accidents to lower SAT scores.
One worry about daylight saving time, which happens Sunday morning at 2 a.m., is sleep deprivation. When we spring forward, we lose one hour of sleep. That may not seem like much of a jolt, but studies suggest most of us don't get enough sleep as it is, so losing even an hour can take its toll.
The one-hour time shift also seems to wreak havoc with our circadian rhythms, the 24-hour cycle our bodies are accustomed to. The cycle sets itself according to sunrise and sunset.