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You don't have to go to the gym to boost your fitness level. Simply walking around the office, taking the stairs instead of the elevator or doing household chores can help, a new study says.

Healthy Hollywood: Jillian Michaels' Take Charge Fitness!
Jillian is the type of gal who knows what she wants and goes for it! The fitness guru quit "The Biggest Loser" this past May simply because she felt her time was up. "Always follow your gut and what's in your heart," Jillian reveals in the July/August issue of Fitness magazine.