After a long flight you may feel tired and confused this is a sign of Jet lag. Your body can’t adjust to the new time zone and the longer the flight the worse the Jet lag. Jetlag can affect the body in many ways such as body temperature, blood pressure, and your appetite and toilet habits.
Jet lag is not serious and will settle after a few days.
To treat Jetlag, avoid napping as soon as you arrive at your destination wait until bedtime to sleep, and spend some time in the sun.
To prevent Jetlag drink plenty of fluids (not alcohol) and take small naps on the plane.