Eli5 So we need calories to survive. If there are 100 calories in a spoon of oil, how come we can’t survive on oil for emergencies?

Question

Eli5 So we need calories to survive. If there are 100 calories in a spoon of oil, how come we can’t survive on oil for emergencies?

In: 3554

Answer 1

It is true that you need calories to survive. It is not true that calories are all you need to survive.

A car needs gasoline to run. But putting gasoline in a car with no wheels will not let it run.