In addition to staying hydrated, which will help you feel better when you land by keeping energy levels up, doing a few simple stretches will get your blood flowing, massage your muscles and internal organs, and relieve anxiety.
You are putting your health at risk if you are sitting for prolonged periods of time – this is anything more than two hours at a time. Being sedentary more than 11 hours a day increases risk of premature death by 40 percent.
Napping for the entire duration of the flight may seem like a great idea, but not if the trip is very long. Sleeping in a sitting position is not comfortable and puts a lot of pressure on your back. Ideally, you will get up and exercise for a few minutes every hour or so whether in your seat, in the aisle or while waiting in line to use the lavatory.
Remaining seated for a few hours means that your muscles are shortened for longer than they should. They tighten, which is why you feel sore when you get up. The body also suffers from poor circulation because you are in a bent position. The muscles don’t get much needed nutrients, causing even more pain.