People, Please!

First of all, muscle does not weigh more than fat - a pound is a pound - whether it be muscle, fat or feathers. Muscle is more dense than fat and takes up less space.

The idea of "starvation mode" is completely ridiculous unless a person is at 0% body fat and has no damaged cells. Only then will a persons body turn to it's own muscle and organs for means of sustaining life. If one is carrying ANY fat, your body is going to utilize the fat and decayed / unhealthy cells before it starts feeding on what it inherently knows is vital tissue.