Ketosis is a state in which the body burns its own fat for fuel and can "cause health problems, such as kidney failure, " according to the medical Web site WebMD.

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Its Bellydance: Fitness for Weight Loss, Hip Drop Hip Hop--30 minutes of traditional hip- and rib-wriggling motions set to a modern, upbeat tempo--burns calories and fat, while supposedly aiding digestion.

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In a study published in the American Journal of Clinical Nutrition, green tea extract increased energy expenditure, which is a measure of metabolism, plus it had a significant effect on fat oxidation, or how much fat your body burns.

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Once her body burns through that available sugar, it will next start burning body fat as fuel, and finally turn to protein once her fat stores are exhausted.

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