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People who fly hate jet lag. It lasts for three days. Flying across time zones changes our body clock. We can be awake at 3.00am but sleepy at 3.00pm. Researchers are making a new drug. It helps to end jet lag in 24 hours. The researchers found the body's "reset button". New drugs could "press" the reset button and end jet lag.
The drug could also help night workers, pilots and cabin crew. They would not get stressed with no sleep. It could also help people who cannot sleep. Jet lag happens after changing three time zones. Some people get it after one time zone. Jet lag is not so old. It started after people began flying in jet airplanes.
Back to the jet lag lesson.
