Drink rehydration drinks (or just water with a splash of fruit juice and a pinch of salt) as well as water. Try not to get too hot personally (only walk in the evening for example...or spend lots of time in the sea!) and stay out of the sun almost completely during the hottest pasrt of the day.
I always take Immodium as well. Enjoy your holiday!
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Re: Effects of sun & heat abroad on holiday ......
