Every living creature has a biological clock., It tells us when we are hungry or tired, and it’s influences many other activities we do every day.to , if you take a trip that crosses three or more time zones, Your body’s biological clock becomes confused, jet lag is the symptoms you feel when your biological clock is different from the time zone you travel to, Some common symptoms may include, Feeling hungry or tired at odd times, Not being able to sleep when you want, and having trouble concentrating, It may take several days or even up to two weeks, for your biological clock to adjust and for you to feel normal again,

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