I can fall asleep almost anywhere. I routinely fall asleep in the break room at work. Once, I was helping a friend fix his car, and I fell asleep on his garage floor when he went inside to get water.
But in a hot metal tube tearing through the sky, with my neck all kinked? Get out of here, man.
I used to fly a lot. I’m at the point where I board the plane, sit, close my eyes, and wake up when we start pulling into the gate at our destination.
I don’t use a neck pillow or anything. Usually just grab a water bottle before boarding, because my mouth gets crazy dry.