A reader sent in a question asking whether I use deodorant or not. When I was about 14 I started getting really conscious about sweat and anxious to the point that I started using Platinum Protection antiperspirant.It pretty much stopped all underarm sweating and I used it until I moved to Sweden last year. It was there that I started biking everywhere and having trouble with overheating. I thought it might be worth taking advantage of a mechanism we evolved to combat that- sweating.