Is That A Big Number?

If Energy in 1 food Calorie (kcal) (4.2 kJ) was a standard unit ...

Energy released by metabolising 1g of carbohydrate (17 kJ)...more would be 4 x Energy in 1 food Calorie (kcal)

Energy released by metabolising 1g of protein (17 kJ)...more would be 4 x Energy in 1 food Calorie (kcal)

Energy released by exploding 1g of TNT (4.2 kJ)...more would be about as big as Energy in 1 food Calorie (kcal)

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