Don't hold the Mayo

The Mayo Clinic, that is. (You can do away with the other mayo, which a former co-worker called Death in a Jar.) The famous facility has a story on its Web site, available here, outlining the benefits of a daily 30-minute workout. You might say, "I don't have enough time," or "Those shorts make me look fat," but trust me, the cardio benefits outweigh--so to speak--any excuses. Send me your ideas about 30 minutes well spent.