A member asked:

Why some people eat all the junks in the world but still manage to have flat stomach with legs like sticks ?

A doctor has provided 1 answer

Metabolism: There is much genetic variation in metabolic rates that affect how quickly and easily consumed calories are "burned off" some people have fast metabolisms (like those your describe), while others have bodies that are very good at storing calories as fat.

Answered 12/18/2013

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Thank

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