When we cross time zones quickly, the body clock is no longer aligned to the time in the environment and almost every process in our body is affected by this, explains Yu Sun Bin, an epidemiologist at the University of Sydney Charles Perkins Centre.
Based on her review of the research on non-pharmacological treatment options for jet lag, she says that the best thing travelers can do is simply follow standard health advice: Eating well, exercising, and reducing the amount of alcohol you drink can go a long way in helping you get the rest you need.
The body clock functions based on the sun. Therefore, the best thing you can do to overcome jet lag is to step into the outdoors as much as possible during the day, and remove artificial lighting—especially blue light from electronic screens—at night.
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