Calvin and Hobbes by Bill Watterson for April 27, 1995
Calvin: I need to get a heart rate monitor. Hobbes: What for? Calvin: To make sure I'm chewing at my aerobic threshold! Every day I want to see that I'm chewing more gum faster, harder, and longer! Hobbes: What's the point of attaching a number to everything you do? Calvin: If your numbers go up, it means you're having more fun. Hobbes: Science to the spirit's rescue once again.