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Calories = fuel.
Eat x calories, burn x calories: all fuel is burned = no loss or gain of wght.
Eat x + n calories, burn x calories: the n calories of excess, unburned fuel are stored as fat = wght. gain.
Eat x calories, burn x + n calories: all x calories of fuel are burned; the shortage of n calories of fuel is then obtained from stored fat = wght. loss.
Doesn't the above apply to everyone, regardless of age?
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'82 SC RoW coupe
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