George comes on a vacation to India from the | vedclass

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(A) Jet lag is caused by the disruption of the body's internal biological clock,known as the circadian rhythm. When traveling across multiple time zon

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Disruption of the circadian rhythm

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(A) Jet lag is caused by the disruption of the body's internal biological clock,known as the circadian rhythm. When traveling across multiple time zones,the body experiences a mismatch between the external light-dark cycle and its internal rhythm,which regulates the sleep-wake cycle. The pineal gland secretes the hormone $Melatonin$,which is responsible for regulating these biological rhythms. Changes in the light exposure patterns during long-distance travel affect the secretion of $Melatonin$,leading to the symptoms of jet lag.

George comes on a vacation to India from the $U.S.$ The long journey disturbs his biological system and he suffers from jet lag. What is the cause of his discomfort?

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