If one stopped eating, Where would the body get its energy from?

Question

Does the fat go first or the muscle?

Answer 1

Fat, or adipose tissue. Its stored in Marrow cavities, and around the body to use as an insulator. This would be the first to go, your body would start to decompose it and use its high amount of energy to power the heart and organs. It would forget about your muscles, and not supply energy to then, because they are not needed at the moment. So, your muscles would start to weaken from lack of nutrients.

Edit:/ ignore this person below me.. Mucus is vital to your survival.. if mucus were to go first, the acids in your stomach would create uclers all over the stomach and end up destroying the stomach. Plus the airborn virus' and bacteria would not be caught in your nose, or in the back of your throat causing you to be infected easier. your body would not want that to happen.

Answer 2

I'd tend to think it would come from both, depending upon how your body is wired (genetics). Some people's bodies are great at processing fat and others have trouble gaining mass.

For instance, if you see a sick person in the hospital who cannot eat properly, their muscles are gone and in many cases so is their fat. There's no signal in the body that says, "I am done burning fat, so let's switch to the bicep". I believe it all goes together... when the body needs to catabolize something, it grabs whatever is available.

Interesting question though.

Answer 3

Muscle

Answer 4

first from the liver.. then protein in muscle.. then fat.
If I remember right, in that order.

But if energy is burned with exercise, the muscle stays and excess fat is preferably burned off.

Answer 5

Fat and muscle

Answer 6

Definitely the fat. but it doesn't take long to start losing muscle mass. The only way you could lose fat and keep muscle is to exercises.

Answer 7

obviously fat.
When you stopped eating your body will first use the available energy source(food you have eaten or the body fat)and then it will start using your body cells for this purpose.

Answer 8

The body reserves its emergency fuel in the form of fat. You can survive for days, sometimes weeks without food. Consider the ill-fated account of the Donner party. They were trapped in the snowy mountains of the high sierras for weeks without food. As it turned out, those which had the most body fat survived and the skinny ones perished.

Answer 9

First the glucose which is stored as glycogen in liver and muscles will be used. then the body fat stored in adipose tissue in used as energy source

Answer 10

the body would get energy from the fat