I agree to a point with all the Fit Pros especially with the word “reprimand” as they are adults and it’s not my place to treat my clients as children (especially as some of my ladies are in their 80’s). While I don’t necessary approve of chewing gum, I do think that it is a personal decision. People “chew” or hold gum in their mouths for various reasons from oral hyigenes to dry mouth and everything in between. I would be more incline to ask someone not to workout while eating a mint/tic-tac/hard candy, more than a piece of gum.
Now that’s not to say I’m perfect as I’ve personally walked 2 marathons, (3) 1/2 marathons and as well weekend walks up to 12 miles “holding” a 1/4 stick of trident sugarless gum (yes, it’s a tiny piece), but it keeps me happy. 😀