Quite right kiwigeo. I should have said crunches, or abdominal, or whatever they call situps now. Of course, we shouldn't do situps like we did years ago. But still strengthening the 'core' is a great cure for lower back problems. (He says as he tries to type with frozen peas on his elbow to reduce the swelling from a day in the shed).
And zovirax for the chicken pox. Wonder cure it is.
Tex