What to wear: Make like Andy Samberg's impression on SNL and wear an old sweater and rat out your hair (the better to continually grab it and yell out "ACK!"), or go with an ironic exercise outfit like the animated Cathy.
How to act: Grab a chocolate bar and a diet soda, and don't forget to constantly say the signature lines: "Sweat drops, sweat drops, sweat drops!" and "MEN!" and "Chocolate!"