How flights can affect our emotions Despite the amazing airplanes technology nowadays, a long 12-hours flight is still a cause for changes in our brains and consequently in ours emotions. Through interviews with passengers, is a true that this condition makes people be more likely to cry, for example watching a movie during the flight. It's happens for a couple of reasons: homesickness, sadness at saying "goodbye" to people you love or happiness about the trip that you're going to do. Furthermore, researchers find that the increasement of the air pressure and the lowest level of humidity, also can affect our emotions. Because of this two changes, the blood's oxygen decrease in about 6 to 25%. It brings changes in our memory, being difficult to perform activities such as calculations and making decisions. This is not a problem for health people, but for elderly and people who have breathing difficults can be a challenge. So be prepared for your next trip, but to try to relax and enjoy your flight.