Textos para a prática de Inglês para Comissários de Bordo - Jet Lag
Jet lag – Cause and Management Also called desynchronosis , jet lag is a medical condition that occurs as a result of air travel across countries in different time zones in a short period of time. This is different from air sickness which is nausea experienced by some people every time they travel by air. Some of the common symptoms of jet lag include headache, fatigue, insomnia, disrupted sleep pattern, irritability and digestive trouble. The body can tell the time of the day with the help of specific signals that are received by the senses. For example, the optic nerve in the eyes receives information about the amount of light or darkness outside and transmits this to the hypothalamus, the part of the brain that controls various bodily functions like temperature, hunger, thirst and sleep as well. When the eyes perceive darkness (sunset) the hormone melatonin is released in the body. This hormone promotes sleep. When the sun rises and t...