This is what Wikipedia has to say about jetlag :
Physiological condition which is a consequence of alterations to the circadian rhythm. Such alterations result from shift work, daylight saving time, altered day length, or as the name implies, transmeridian travel as on a jet plane. They are known as desynchronosis, dysrhythmia, dyschrony, jet lag, or jet syndrome. The condition is generally believed to be the result of disruption of the “light/dark” cycle that entrains the body’s circadian rhythm. It can be exacerbated by environmental factors.
For those who travel from one time zone to the others will definitely knows and has had experience of jetlag. Based from my experience, there are a couple of ways to minimize the effect of jetlag. Normally what I do :
- Adjust my clock to be the same as the destination time.
- Try to follow the day cycle of the destination.
- Sleep throughout the journey if you are arriving early in the morning.
- Take a short sleep when arriving.
- avoid caffeine and alcohol (For me only caffeine as I don’t take alcohol
These are the steps I normally practise when traveling involving two time zones. So far, I have not faced any problem with jetlag. Taking medicine is not advisable as it will jeopardize other things which we may not know.