Yup, I'm 6'3 so needed that advice a bit earlier, but being a bloke wouldn't have listened. And it nearly was the Last Post - all it needed was a bugler with a flag - but it was fortunately a glancing blow.
When I was 16 I used to maintain the local church bell tower and wind the clock every couple of days. Locked in the tower and moving a step ladder I failed to notice the wrench balanced on the top which duly fell and concussed me. So when I woke up I washed the blood off and went back to school - duh! I also used to walk around the bell chamber with the bells "up" to fit mufflers onto the clappers for when people practised. It scares me just to think about it now - the beams were about a foot wide above a ten foot drop and the lightest bell was over 6cwt. No mobiles, no phone, no alarm and no companion: health & safety is not all stupid!