To loose 1 pound of fat = 3500 calories. Lets say you want to loose 5 pounds, that means you need to put your body in a deficit of 17,500 calories. Can you do that in a week? No, not without loosing muscle and becoming dehydrated. As an earlier post noted, by depleting your body of 500 calories a day, you can safely loose the weight in about 35 days (35 x 500 = 17,500 calories.)
Pascale
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