How to fight jet lag

updated 12:03 p.m. ET Nov. 1, 2006

Jet lag is physical reaction to a rapid change in time zones. It affects most travelers, including seasoned fliers like flight attendants and pilots. Common symptoms include disorientation, irritability, fatigue, swollen limbs and eyes, headaches, cold-like symptoms, and irregular bowels.

Long-haul flying can be debilitating. Dehydration, unfamiliar foods, cramped spaces, recycled air, lack of sleep, uncomfortable clothes, continual low-level noise, connections that disrupt sleep, and other factors all add to the misery of jet lag, and can even make you feel jet lagged when you're just a little beat up.

Flying from Florida to Maine won't produce jet lag in the true sense, although the effects of the long flight might feel quite a bit like classic jet lag. In these cases, you're just tired from the flight, and a good night's sleep and perhaps some exercise will set things right. Studies have also shown that jet lag is worse for travelers heading west, as opposed to those traveling east.

On long flights, especially red-eye flights, you can lose several hours of sleep time, which can set you back considerably even without the jarring time change. If you live by a regular schedule (up at 7, in bed by 10 every night), watch out. Jet lag hits those with rigid body clocks the hardest. For parents, be sure to bring along books and toys your child can play with on his or her own, as kids are nearly immune to jet lag.

A general rule of thumb to keep in mind before any long trip is the 1:1 ratio: allow yourself one day to recover for every hour time difference you experience. So for Californians visiting the Big Apple, give yourself at least three days to fully adjust to the new time zone.

Before You Go
Treat your body well before you fly. Exercise, sleep well, stay hydrated and stay sober. The worst thing you can do is get on a long-haul flight with a hangover.

Some travelers like to exercise before they go to the airport. (This can actually help you sleep better on the plane.) Once you're at the airport, avoid the escalators and moving sidewalks; instead, walk and take the stairs on the way to your check-in area and gate connections.

Adjust your habits before you leave. If you are traveling from the East to the West Coast, you're facing a three-hour time change and you should try to adjust your internal clock. Three or four days before you leave, start to stay up a little later than usual, and sleep in a little longer. That way, if you become accustomed to falling asleep at 1 a.m. and waking up at 9 a.m. on the East Coast, it will be the same as falling asleep at 10 p.m. and waking up at 6 a.m. on the West Coast. Traveling west to east, do the opposite: get up and go to bed earlier.

Wearing two watches, one set to the current time, and one to the time at your destination, can help you prepare yourself mentally for the coming time change. Many business travelers also use this tactic to stay in touch with what's happening back at the office.

During the Flight
Perhaps the most effective way to combat jet lag while in flight is to treat your body well. Stay hydrated by drinking plenty of nonalcoholic, non-caffeinated fluids. Don't be afraid to ask your flight attendant for extra water.

Get up out of your seat at regular intervals to walk and stretch. You can also do exercises like toe raises, isometric exercises, stomach crunches and shoulder shrugs right in your seat. This keeps your blood flowing and prevents it from pooling at your extremities, a common phenomenon in pressurized cabins.

Other tips: Get up to wash your face, brush your teeth or just stand up for several minutes. Wear loose-fitting clothing that breathes. Bring a neck pillow, blindfold or ear plugs -- these are invaluable on red-eye flights. Also, avoid any snug footwear (high heels or wingtips); it is quite possible that your feet will swell in transit, making your post-flight trek to baggage claim a nightmare.

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