How do negative calories work?

Question

I’ve heard about this thing so many times. How is it possible to eat something, but still burn calories?

In: Biology

Answer 1

The theory is “your body burns up more calories to digest this food, than it is able to extract from the food”.

In reality it doesn’t work that way. It was a joke originally made by someone intentionally mixing up two different definitions of “calorie”. “Negative calorie foods” do not exist.