Someone on a flight once explained to me that the noise on an airplane is a large factor of why flying makes you tired: your brain is constantly processing all

Someone on a flight once explained to me that the noise on an airplane is a large factor of why flying makes you tired: your brain is constantly processing all that background noise and looking for patterns in it. Since then I've always worn earplugs on flights, and usually also big over-the-ear headphones over them (just turn the volume up slightly higher). It's been a big improvement in flying comfort.