Brace position
I'm a frequent flyer and 1m86cm (6'2" in old money)...
Just out of curiousity I recently had a little try at adopting the brace position in the cheap seats of a European short haul flight.
Guess what... there wasn't enough room for me to get my head down and I think in the event of hard landing I would have broken my neck - Furthermore, if one happens to be seated in the row behind the emergency exit the seats won't go forward, so what happens to the poor souls in those rows?
Grateful for anyone's thoughts...