http://fitlist.msnbc.msn.com/archive/2007/12/04/496126.aspxBy Jeanette Jenkins With the steep fuel prices, you probably know exactly how much gas it takes to fill up your car. But I’m betting that most of you don’t know how much food it takes to fuel your body, or how many calories you burn while your engineen-USCommunityServer 2.0 (Build: 60608.1)http://fitlist.msnbc.msn.com/archive/2007/12/04/496126.aspx#510117Tue, 11 Dec 2007 15:34:53 GMT8a5d2dbc-a0e4-4c7a-979f-3188051f228e:510117bernie marquartHealth