I've just been reading about the earthquakes in Hawaii and i've noticed a lot of people's accounts include them diving for doorways to stand in. Is there any reason that standing in a doorway during an earthquake is safer than say lying on your couch?
Plus there is a frame round the door, and a lintel above, so you are unlikely to get hit by falling bits of the floor above. If you check out photos of partially collapsed buildings, you will notice that the door frames are standing up in the ruins.