1. Make yourself comfortable
2. Getting hot? Just unzip your cardigan
3. Stretch yourself out
4. No, really, stretch yourself out
5. Tables make excellent footrests
6. Too much light? Cover your eyes with a scarf
7. Or a newspaper
8. Nowhere to rest your poor, weary head? Use a pole
9. Plastic bottles make perfect pillow replacements
10. As do fellow passengers
11. No seats available? Sleep on a luggage rack
12. Sleep under a luggage rack
13. Or just on the floor in the middle of the carriage
14. How about multi-tasking? Grab a snooze and a snack
15. Listen to the new Justin Timberlake album
16. Give yourself a caffeine boost with a cup of coffee
17. Protect yourself from deadly viruses
18. Catch up on the day's headlines
19. And most importantly, remember there will probably be someone waiting with a camera, so always strike a pose
Thanks to @SleepyCommuters for this compilation. For more tired travellers, visit their Twitter page.