
A messed-up body clock could be a bigger problem than lack of sleep
On the eve of Daylight Saving Time, I flew home to Vermont from California. Crossing several time zones, I arrived near midnight. At 2 a.m., the clock jumped ahead an hour, leaving me discombobulated. “How messed up am I?” I asked sleep researcher and evolutionary anthropologist David Samson days later. Jet lag can make people…