Today, as I stood around, invigilating a 40 minute exam in Physics, I was brooding on my backache and the incipient arthritis in my hip. I suddently made the connection between standing around invigilating and when the backache / sore hip began! I wonder if it'll all clear up after next Wednesday when invigilation finishes for the summer... At least I now have an explanation for the aching and can stop worrying myself with wild imaginings!
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