Out cycling in a sunny summer’s day not a cloud(20c) but kept getting a cold wind/draught off the sea which gave me a burning sensation on my back; after an hour I gave up because of it and returned home. For the next week my back muscles felt sore and I couldn’t heat myself up and I didn’t feel right for about a fortnight. It’s new one to me and I have been cycling and running for over forty years. Anyone else?