Jonno said:
i tried holding my breath when luke was under the water and i couldnt do it why didnt he die
Don't forget walking out of the Falcon without pressure suits in the belly of a space slug in ESB
To get round these scientific flaws I suppose you could say (apart from it's only a movie) that it's set 'A long time ago, in a galaxy far, far away' and although the term 'human' is used in the films, the characters have a different biology to us
J