“To reduce jet lag, use the sun to reset your body’s internal clock. When flying west across several time zones, stay outdoors in direct sunlight at the end of the first day in order to help push back your bedtime and wake-up time. When flying east, go out in the sun early the next day to help you adjust to an earlier bedtime. Walk, sit, or exercise.”
— University of California, Berkeley. 365 Tips for Better Health.
