Jobs that keep you in shape

Over the years, countless magazine articles have promised you could "lose weight at work" or "tone up in 10 minutes at your desk. Such pieces advise employees to bring two soup cans to work to do bicep curls during a conference call, or sit on a medicine ball (instead of your chair) to strengthen your core muscles throughout the day. Mayo Clinic even designed a vertical workstation -- a desk fitted over a treadmill that lets employees walk through their workday, instead of sitting at their desk.

"Easy" as these tasks may seem, when you get down to it, they aren't easy at all. After all, who wants to spend their day trying to balance on a ball or sweating profusely at their $1,600 desk (the approximate cost of the vertical workstation)?

Instead of trying to tone up before, during or after work, why not find a job that is a workout in and of itself? We're not talking about the typical fitness occupations, like a personal trainer or an aerobics instructor. We're talking about childcare workers, painters and messengers (to name a few)