excercise?

Things are getting bad re: me and excercise. It's been a while since I've hit the gym. Just now I had what I think can be counted as a moment of desperation. I caught site of myself in the mirror and thought I was looking a bit "jowely". Eating gum at the time I wondered if the chewing motion would actually be excercise for my jaw, and reduce that jowely look. Clutching at straws I think.