I run kinda hot. It is a perennial problem for me to function in a suit and tie in summer without sweating like a paedophile in a playground. Here are some of the stratagems I've developed and tips I've picked up to help beat the heat. 1. Have a seasonal wardrobe. Back before I put much thought into these things, I just owned clothes. Now I own summer clothes and winter clothes. This may mean buying the same suit twice, just in different cloth, but the extra expense is worth it. 2. Arrange your life such that you are never in a rush or have to carry heavy things. This is no excuse to mince about with those silly little trolly bags at airports though. Buy manly luggage, pack light, or pay someone to carry it for you. 3. If you have a son, when he hits about thirteen, take him aside one day and tell him about the joys of fresco. His tailor probably won't; they only like to sell worsted. 4. Let go of your childhood peeves. We all know someone who refuses to eat some perfectly good foodstuff because they didn't like when they were a kid and haven't tried it since (they might claim to have an allergy: they're lying). Makes them look pretty stupid doesn't it? I had a linen shirt when I was about 14; I thought it was heavy, scratchy and funny looking. Put me off linen for years. What can I say - I was an idiot when I was 14. Weren't we all? 5. Wear hi-tech undershirts. Some time ago on his blog PG recommended UNIQLO's undershirts in some man-made wicking fibre to wear when things are getting sticky. I hadn't worn an undershirt since I was about ten, but decided to give it a go (see above). I thought an extra layer would just make me hotter - but guess what, he was right. Plus you can go around all day safe in the knowledge that there are no unsightly sweat marks showing through on your shirt, which is a great psychological bonus. 6. Merino socks are better than cotton. What madness is this? Will made this claim on his blog, and as he clearly knows his biscuits, I tried it one day. For the first time in my life I paid close attention to what was going on about my ankles. You know what's coming: Will was right. I still own and wear plenty of cotton lisle socks, but I don't hesitate to reach for the merino in summer now, especially if I'm going to be on my feet a lot that day. So thanks Will, PG, SF and the internet in general. But if you want or need to stay smart in the summer, what do you do to beat the heat?