What do you feel about Jet lag? How to avoid it? Here is everything that you need to know about Jet lag. This is a article from www.wikitravel.org
Jet lag is not caused by flying per se, but is a form of disorientation and fatigue caused by abruptly switching to a different sleeping/waking schedule and different daylight hours. Some people are affected more than others, but it tends to happen when crossing two or more time zones in a single flight (which first became commonplace with the development of commercial jet air travel, hence the term).
One way to avoid jet lag for short stays is to ignore the difference in time zone, and maintain the same sleeping schedule as you would according to the time "back home", perhaps keeping lights on to simulate daylight and pulling shades to simulate night. This is less practical for longer stays, or when travelling several time zones from home which would place you far out of synch with local hours.
The impact may be diminished by gradually adjusting your sleep schedule in advance of a long-distance trip. For example, before flying from California to Germany, you might start a week ahead of time, going to bed and waking up an hour earlier each day. By the time you actually made the trip, your sleep schedule would be almost in synch with your destination.
For flights lasting longer than you are used to, have enough sleep right before the date of your fly--it's even worth sacrificing packing right or having done all the work you promised before going to vacation.
Another remedy is to attempt to have a normal day, but in terms of the time zone you've flown into. If you land at 7am, for example, you will probably have been served breakfast on your flight, so head to your accommodation (ask if they can mind your luggage if it's not check-in time yet) and go and see some of the sights, making sure to get some fresh air. You'll feel tired, particularly by the mid-afternoon, but keep pushing on until an early dinnertime. Eat dinner and then go to bed. You should be tired enough for a good night's sleep, but have some sleeping tablets handy in case. That way, if you wake up far too early because you're on the wrong time zone, just take a tablet and go back to sleep. After a couple of nights, you'll have adjusted to the point where sleeping tablets aren't needed anymore.
The most important book ever written for the international traveler about preventing jet lag was Overcoming Jet Lag by Charles F. Ehret, Ph.D. and Lynne W. Scanlon, published by Berkley Publishing Group. Dr. Ehret's research was underwritten by The U.S. Government and used by The U.S. Army Rapid Deployment forces so they could be "fighting ready" no matter how many times zones they crossed to get to their destination. With Dr. Ehret's permission, that outdated and out-of-print book was rewritten, revised, and republished in October 2008 by Back2Press Books with a new title: The Cure for Jet Lag by Lynne Waller Scanlon and Charles F. Ehret, Ph.D.. The new edition contains multiple flight plans -- eastbound, westbound, zigzag, one landing, multiple landings and corresponding 3-Step Systems for each flight pattern. It also contains a chapter on "old" remedies used by international travelers like Henry Kissinger and Lyndon Johnson, some of which work fairly well, but none of which are comprehensive.
It's also important to note that Dr. Ehret did not subscribe to using any drugs to prevent jet lag. He felt not only that they were unnecessary but also that the body had to work over-time to get rid of the foreign substances in the body. This just added another negative element complicating jet lag.
The article is taken from
http://wikitravel.org/en/Tips_for_flying
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