A long stay in an airplane at a high altitude often affects well-being and health. In addition, a long flight is most often associated with a change in time zones.
An airplane can deliver a passenger to another part of the world, where not just a different time on the clock, but also different climatic conditions. For the body, such a “drastic” change, of course, will be stressful.

To minimize the risk of feeling sick, prepare for a long flight by taking a few simple steps.
The documents
This is the initial point that most people often forget about.

Prepare all the necessary documents in advance, this will help you get rid of the initial stress. Take all the required photographs for documents.
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So that at the airport you do not have to undergo additional checks if you do not look like yourself.
Know everything in advance
Find out in advance in which time and climate zone you will be flying, and what is the time difference with your place of permanent residence.
Start preparing your body in advance for changing time zones and climatic conditions, and gradually change your sleep and wakefulness patterns, and diet. Then the body will be easier to rebuild.
The right choice of seats on an airplane
Comfort in flight largely depends on the seats occupied on board. Convenient seats can be chosen when booking tickets, having read the plan of the aircraft. It is believed that it is best to take seats in the center of the cabin, near the porthole.
The chair should be comfortable because you have to walk in it for several hours, or even a whole day. If, having taken your seat, you realized that you were not comfortable enough, then after the announcement of the completion of the boarding, you can try to change seats, but in practice, this is not always possible.
What to Wear
Going on a long journey by plane, you need to think carefully about what to wear. Clothing and especially shoes should be comfortable. It is often cool at altitude, so even if you fly south in the summer, you should just in case have a warm thing in your hand luggage.
Nutrition
During long flights, passengers are usually fed. However, you should not count on “road rations”. You need to get on the plane fully. But overeating is also a bad idea. Some passengers on the plane begin to feel sick, and a “full stomach” can play a cruel joke here. Eating on the plane, focus on your well-being. Lozenges or chewing gum can help to avoid nausea during the flight, just in case, take them with you.
Better not to drink alcohol
Some passengers believe that if they drink during the flight, the time will fly by. However, be careful, alcohol abuse can negatively affect your well-being both during the flight and upon arrival at your destination. But ordinary water or non-alcoholic liquids should be drunk more, the liquid has a positive effect on blood circulation and helps the body cope with a long flight.
How flying can affect the body and why
Why do many people experience discomfort during a flight? Yes, because the salon is always a special atmosphere, in the literal and figurative sense of the word. There is less oxygen in the air, the humidity is lower, and this affects the human body in a far from a good way.
Lack of oxygen
The air mixture in the cabin of the liner is completely suitable for normal human life, although it contains less oxygen than we are used to. Because of this, passengers often feel drowsy, and some begin to have headaches. All these are the consequences of mild hypoxia, which under normal conditions people can easily endure, but at altitude, this problem should be taken more seriously.
Blood stasis
Long hours of flights mean long periods of sitting in an air seat. The stagnation of blood that occurs due to a long stay in the same position leads to unpleasant consequences. Swelling of the legs and arms, sometimes the face. People with problematic vessels are at increased risk of thrombosis.
Dehydration
The conditioned air on board is not sufficiently humidified. This not only causes a feeling of weakness, fatigue. Passengers with respiratory problems often develop bouts of dry coughing. And almost everyone feels an unpleasant dryness of the skin and mucous membranes of the eyes, nose, and larynx.
Nausea
In most cases, it occurs in those who, in everyday life, are prone to motion sickness in transport. It is connected with the overloads that the body experiences during the ascent of the liner, and the vibrations that always accompany the flight. Most of all, unpleasant sensations appear if the traveler boards the plane with an empty stomach.
Ear congestion
The takeoff and landing of an aircraft are always accompanied by a change in the ratio of gas pressure (air, after all, is also a gas!) Inside the cabin and in the human body. When the liner gains altitude, the gases in the body expand and begin to put pressure on the eardrums.
Disruption of circadian rhythms
When an air traveler crosses several time zones, his internal biological clock goes astray. This leads to sleep disturbances, especially when flying in an easterly direction. The irregularity of the hormonal system of the body also leads to increased anxiety, irritability, or, conversely, complete apathy.
Therefore, it is worth relying on the methods presented above to make your flight easier.