The jet-lag drug could also have other health benefits. People who work different shifts and night workers could take the drug. This means these workers will not be so stressed from working at irregular or unsociable hours. Airline pilots and cabin crew could be among those who most benefit from the new drug. The drug might also be useful for people with insomnia (the inability to sleep). Wikipedia says jet lag usually happens after a change of three time zones or more. Some people get it after just a single time zone difference. It usually takes one day to recover from crossing one time zone. Jet lag is only a few decades old. It happened after people started flying in jet airplanes.
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