Goodbye calories, my old foe

A calorie is nothing more than a unit of measure; and yet for many people, this unit of measure monopolizes their lives. So, what does this unit actually measure?
Does it measure the amount of nutrients you receive from a given food?—No. Does it measure the increase in your well-being that you get from eating a certain food?—No. Wait, does it measure the amount of energy the body is given? Absolutely not.
A calorie measures the temperature increase in water that incinerated material creates. And although our stomach can be seen as a metaphorical incinerator, the stomach processes involve acids and enzymes instead of straight fire. And technically, we can compute the calorie output of anything, so long as it is flammable. We could compute the calories of sticks, or leaves, or rope if we so desired. … More Goodbye calories, my old foe