I use to be able to sleep like a baby on an air plane. I'd fall asleep almost as soon as we lifted off. Then I developed this sensation of falling asleep. As in falling through the fall to my tragic, yet somehow comical, death. It dogged me for years when I was flying regularly.
I decided to fool myself into thinking I loved to fly. I wuld fill my tiny brain with thoughts of loving to fly. I loved the food, the people, the ginger ale. It's amazing what your body will do if your brain believes something.
My heart rate decreased, I felt calmer, and could fall asleep without jerking awake and embarrasing myself. Now the drool on the pillow is the only embarassment.
If that fails, initiat Brian into the mile high club.