What To Do?

OK, so here's the deal. Tomorrow looks to be a great day for a bike commute - cool in the AM, warm and sunny all day. However, I have a 9am meeting on the north side of town. It's about 4 miles away, and the route includes a somewhat tough hill (at least for me). There's no doubt that I will get pretty warm riding up to the meeting.

I don't mind getting hot on a ride, but when I'm in my work clothes (business casual) and will be trapped in a small room with half a dozen people, I don't want to offend. What should I do?



I'm putting this up on short notice, so please feel free to answer after the day in question. I'm mostly just curious what everyone thinks.