The speed at which the body adjust to the new schedule depends on the individual; some may require several days while others experience little disruption. To help minimize jet lag, you can start by keeping yourself in a good physical condition. Drink lots of fluids during the flight, but avoid alcohol or caffeine, as these things can cause dehydration. Once you have landed, exposure to sunlight during the day also helps your body to reset its internal clock. With these easy steps, you can fight off the jet lag and still have a pleasant trip.