The reason you might be more likely to cry on an airplane

In fact, in 2011, Virgin Atlantic conducted a Facebook survey in which 55% of respondents saidthey experience heightened emotions during flights. Medical studies have proven that the lower air pressure of an aircraft can cause changes in mood, personality, behavior, and cognitive functioning. And while researchers haven’t identified a definitive cause for in-flight weeping, Popular Science reports that it’s likely a combination of oxygen deprivation, dehydration, and stress.