Which of the three does the body metabolize first

In starvation mode, the body metabolizes which of the following first?

Adipose (Fat) or Protein (Muscle)

Adipose. You'd be screwed if it broke down muscle. No one would do cardio.

Wait, where is the third option. Your body will go for glycogen first and until it runs out. You will lose weight when you break down glycogen because of all the water that goes along with it. That takes a week, then you will start in on the fat.