The seats by the window are colder
The temperature outside the cabin can fall to as low as −60°С to −65°С, which cools down the temperature of the plane’s fuselage. This external cold can be felt above all in those seats by the windows, especially during summer when most people wear light clothing. So if you enjoy gazing at the views out the window, it’s best to dress a little warmer.
You should avoid drinking coffee or tea
The drinking water used to prepare hot beverages onboard can contain malignant bacteria such as E. coli and Staphylococcus aureus. This conclusion has been reached on more than one occasion by specialists who have examined items used by various airlines in laboratory conditions. So instead of drinking tea or coffee, it’s best to ask for bottled water or fruit juice.