I really don't know Limpy, I thought I had the not doing too much under control, but now im not so sure.
The heat so far doesn't seem to effect me with the Ms, I seem to be able to lie in the sun for hours as long as my head is in the shade. Just as well as I'm off to Kos in the morning for 12 days of Luxery in 5 star hotel on the beach, perhaps that's what I need plenty of sunshine, good food and lots of rest!