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What's with the face? I'm doing stretches. Chewing magazine says you should always warm up before you chew gum. Did you know that neglecting to stretch the temporalis muscles is the leading cause of gum chewing injuries? What about falling down while chewing and walking? With a good helmet, the risk is surprisingly small. Calvin's mouth is hanging open. He tells Hobbes he's doing stretches. As he pulls his cheeks and jaws, he says you should warm up before chewing gum. Neglecting to stretch is a leading cause of chewing gum injuries.
Hobbes asks about falling down while chewing and walking. Calvin puts on a helmet saying that with a good helmet, the risk is surprisingly small.