It is a very hot day but I have been indoors most of the time. I had felt tired today after a lengthy boat trip yesterday and this evening suddenly felt sweaty with slightly shaky hands and my pulse seemed elevated - even though I was in air conditioning This lasted for no more than five to ten minutes. I immediately ate some nuts and yoghurt and lay down. The symptoms passed quickly and there are no pains anywhere. An hour later I feel OK and want to get in a good nights sleep - my wife wants me to go to hospital for a check up. I do not believe I am suffering a heart attack or am in danger. Should I go to bed or do as my wife says and go to hospital for a check up?