As many of you have read (Confessions of a Gum-Chewing Runner), I am a chronic gum-chewer. I have different types of gum for different purposes – including running. So, when I heard about Run Gum, I figured that it was just the product for this Gum-Chewing Runner. I received 3 different samples of Run Gum to test: Cinnamon, Mint, and Fruit. I will admit, I was a bit nervous about this gum because it contains caffeine…