Harsh but funny, all the same - if you can't take a joke, shouldn't have joined....
My AME some years back said he would like to have a look at an exercise ECG. I was determined to pass, so spent 3 weeks practicing by going up and down the stairs at home, got able to ascend and descend 30 times without stopping.....
and knackered my knees....
So a few years later (really pushing my luck now - friends said "Mary, are they still letting you instruct?" "Sure, why not?" I replied. "Aren't you approaching seventy?" "No," says I, being a smartass, " its getting further away all the time...."
And the knee still giving me gyp big time, went in to the Nuffield and had a knee replacement - titanium, nothing but the best on the NHS. Unfortunately a complication made the decision for me, and I handed in my medical. Anno domini gets you in the end. Life's a bitch, and then you die.