If, "touch wood" I had to adopt the brace position I would not follow
the instructions on the card or video.
I would - "seated" bring my knees upto my chest, place my head on my knees and hold my hands tight together around my lower legs, almost
ball shape.
What is the point of protecting your head when your legs will be smashed
into the seat infront of you ? you wont be able to walk,run or swim anywhere with shattered legs !
p.s, ONLY travel in cotton/wool clothing, NEVER man made pollys or mixed
the risk of fire is very high, cotton and wool lower the risk of burnes
.