Coincidentally, my son has just rung me from Osaka and he was telling me how hot and humid it is , so he's having air-conditioning installed in his place in a few days. I'm planning to visit him in September for a few weeks so I hope it cools down a little before then. You probably know not to wear clothing containing man-made material such as polyester, nylon or acrylics as these hold in the heat and don't allow the sweat to evaporate. Don't forget to drink loads more than when you're in England(except alcohol of course, which will dehydrate you further). Funnily enough, it does help to 'think cool', when you're sweltering in a hot climate and anyway, you probably don't look half as hot as you feel - try looking in a mirror when you feel as if the sweat 's cascading down your face and you'll see it's not that noticeable, although I know that's not much consolation.