Jet lag is the worst. Everyone hates it. And it's not like anyone even secretly enjoys jet lag, either. There's no better way to foul up a vacation than to spend all day in bed, wasting those precious daylight hours because your internal clock's out of whack. But a new app developed by math experts at the University of Michigan hopes to fix all that.
The free app, called Entrain, helps users get acclimated to another time zone ahead of arrival. Sure, savvy travelers already know that light exposure and switching sleep cycles before flying can help -- but most people don't have the time nor inclination to wake up at weird times or pull all-nighters, let alone submerging themselves in darkness and sun lamps. Entrain simplifies all that. It does the math, syncing circadian rhythms (natural sleep cycles) to time zones on upwards of 1,000 trips.