Believe it or not, there's actually some protocol to which is more appropriate.
Etiquette expert Lizzie Post, great-great-granddaughter of Emily Post, knows a thing or two about the rules of the road—and the descendant of the famous decorum diva is a runner too!
Q: Is it poor form to have a post-run brunch with friends and not bring a change of clothes?
It is very common for running, biking and other active groups to do a post-activity meal together. Yet we all know that sweat and smells can certainly be unappetizing. Two factors here: 1. Personal comfort. If you’d like to bring a change of clothes, by all means change in the car or the restroom so that you are more comfortable. 2. Others’ comfort. If it doesn’t bother you to be in your sweaty workout clothes, the only thing I would suggest is to make sure it doesn’t bother anyone else. It is hardest for us to smell ourselves, so ask a friend who would tell you—honestly—if post-workout odor is a problem for you. At least this way you’ll know and be able to handle it.