Eastern time zone deviation causes fatigue longer than the west

Visitors will find it much more difficult to adapt to the new time zone when flying east compared to the west.

This result was published by a study published in Chaos magazine (AIP, USA). Professor Michelle Girvan said: "Basically, the difference between flying east and west is because the circadian rhythm has a little longer than 24 hours of natural time ."

Time lag makes visitors tired.(Photo: Getty).

So instead of a 24-hour round, the biological clock will be 23.5 hours or 24.5 hours . "Your biological clock will run first if you fly east, and run later if you fly west," Girvan said. "However, if you fly over many time zones to the east, your biological clock will not run first as you think, but it slows down."

Pre-run time means the time to go to bed and wake up earlier in the day, slowing down means that the time comes later. This is why the time zone discomfort is getting worse.

Research shows that if you go 3 times to the east, it will take more than 4 days to fully recover. Meanwhile, if you go west, you will only take a little more than 3 days. If going through 9 time zones, people going east will take nearly 2 weeks, while people go west take less than 8 days to recover.

However, if going east and west through 12 time zones, the recovery time is almost equivalent, about 10 days.

To limit the fatigue of time zones, the researchers recommend travelers to take advantage of the light , including artificial light like a computer screen, if arriving at a time zone earlier to wake up the nerve. .