Do you notice how when the television news items the person who is going up steps always run the last few .It that body language for saying must rush and get on with this business .Would not you like to see them trip .Not nice but go on you would wouldnt you ...
I always run up stairs. I always go down stairs in twos. I should grow out of this because I often fall :-) I also run to the shop. Obviously I find getting from A to B pretty boring so I do it as fast as I can.
I don't like to see people fall unless it's on 'you've been framed'