Jet Lag

Jet lag is the bane of all travellers but there are ways to lessen its effects.

Source: thestar.com.my

The world, which is a sphere, is divided up into 24 time zones. The basis for world time is the Greenwich meridian, which is an imaginary longitudinal line passing through Greenwich village in London. The time changes by an hour for every 15° travelled in either direction from the Greenwich meridian. When one goes westwards, one gains time; when one goes eastwards, one loses time.

Jet travel enables a person to travel long distances over several time zones. When one travels over at least more than three time zones, one may experience jet lag. The traveller’s body clock is disrupted as the body has to adjust to a new routine that is different from what the traveller is usually accustomed to. The body will need time to adjust to the time. In short, jet lag is a sleep disorder that occurs when the body’s biological clock does not correspond to local time.

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Dr Milton Lum is member of the board of Medical Defence Malaysia. This article is not intended to replace, dictate or define evaluation by a qualified doctor. The views expressed do not represent that of any organisation the writer is associated with.