Good advice

I see this several times a day every day I go to work. Today I managed to fall (literally) foul of this advice and wedged myself between the train and the platform. Luckily for me it was a smallish gap so I stopped falling once my calf muscle got in the way so only my lower leg was in the gap. Some kind man immediately pulled me out so I was only there like that for a few seconds. Very scary stuff though and I do have some pretty big bruises developing. Just glad that was all that happened! Can't believe I managed to do something so daft to myself.