article_snippet: When it comes to criss-crossing the globe by plane, it seems jet lag is the least of our worries.
article_snippet: Additionally, the motion sickness that you may feel in the pit of your stomach actually also starts in your inner ears, when your balance is thrown off by something like turbulence.
article_snippet: In this instance, the best bet for preventing nausea is to book a seat over the wings, which is the steadiest part of the plane.
article_snippet: Lower levels of oxygen in the plane's pressurised air can cause light-headedness and shallow breathing .
article_snippet: It may be a small difference, but the lower oxygen levels in the plane's pressurised air can lead to minor oxygen deprivation in travellers.
article_snippet: If this happens to you, be sure to alert a flight attendant, as he or a flight attendant may be able to provide you with additional oxygen or even increase the overall airflow to the plane.
article_snippet: The lower pressure in the cabin can also affect your blood circulation, which could lead to swelling in your lower extremities - especially on long haul flights when you're cramped in your seat.
article_snippet: Ideally, walk around the aircraft every 30 minutes, or, at the very least, flex and stretch your feet regularly.
article_snippet: Anyone sitting for more than four hours, as most people do during long-haul flights, is at risk of developing DVT, however, certain groups may be at greater risk.
article_snippet: To help prevent clots, moving around during the flight and wearing support stockings will both help to keep blood circulating.
article_snippet: However, if you begin to feel short of breath, experience chest pain, or if your legs are still swollen after the flight, you should seek medical attention immediately.