Jet lag is a psychological condition that occurs when the normal circadian rhythm of the body is distracted resulting in fatigue and sleep disturbance. The circadian rhythm refers to the 24-hour biological cycle, otherwise known as our internal clock. Jet lag most often occurs after taking a high-speed trip through multiple time zones. Common symptoms include fatigue, inability to concentrate, feeling disoriented or out of sync, and sometimes headaches. You don't have to take a transcontinental flight to experience jet lag. Individuals who start a night-shift job may also experience a jet-lag like response.
The first step in curtailing jet lag can take place in anticipation of your symptoms. Before your trip, as you board the plane, it is recommended to start training your body to the time of your destination. You would need to set your watch to the time corresponding with your destination, and possibly miss some meals that will be served while you are sleeping. Since a jet's cabin air is so dry, it is recommended to stay hydrated with water or juice. Because caffeine can affect your sleep/wake cycle, it is suggested to forego coffee and tea. Alcohol should be avoided completely since it is a diuretic and affects the normal circadian rhythm in renal function.
If you plan to arrive at your destination during the daytime, you want to try to get at least six hours of sleep prior to landing. The problem is, you may have begun your flight in the afternoon. So how can you expect to fall asleep? One trick is to eat a meal high in carbohydrates. Carbs are known to induce sleepiness. Some individuals, however, cannot just sleep for six hours in the middle of the day. Others may be flight shy and kept away by anxiety. The Mayo Clinic suggests prescription nonbenzodiazepines like Ambien or Lunesta. If you arrive at your destination fully rested, there's a better chance that your internal clock will adjust more quickly.
Travelers unanimously agree that one of the best ways to overcome jet lag is to resist taking a nap if it is daytime at your destination, or, conversely, avoid staying awake at your destination if it is night. The most important thing to understand about jet lag is that your internal clock just keeps on ticking. Without some urging on your part, it will only slowly adjust to your new environment. On its own, your body will experience symptoms more harshly than if you make an effort to help your body adjust.