What you wear also matters. I’ll leave the exact choices up to you, but aim for a few layers of warm, loose-fitting clothes. I normally go with shorts or track pants, a nice t-shirt, a light top, and a big hoodie. That way, if the AC is on high, I can put on my hoodie—or strip it off and go with the light top, or just the t-shirt, if I get too warm. Don’t forget warm socks, either.