For those confused or questioning "Eating your exercise calo

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Did anyone see that Banks deactivated his account?

think of it like a car.

If it takes you 1/2 a tank every week to drive to and from work, then that's how much gas you need. But think of exercise as... say a trip to the mall after work, you need to add the extra gas to get there and back. If you put 1/2 a tank of gas in for the week, well, you can't expect to go to the mall right? Cuz you will (literally and figuratively) run out of gas.
The only difference is, in a car, you simply run out of gas. With your body, instead of just running out of energy, your body will start shutting things down (like, organs, metabolism...etc) so that it uses less energy, also it will pull energy from other areas like muscles and other lean body mass (thus reducing your lean mass, which is bad).

That's really over simplistic, but it's close enough to get the idea.

How about this.....

your body is smart enough that it holds on to "necessities" fat and water first and foremost.....but also "energy sources"
If it senses that it isn't getting enough, it begins to hold onto what it needs....if you cut fat completely out of your diet....your body will hold onto the fat you already have; same thing with water and energy stores; it does take your body (AND EVERYONE IS DIFFERENT) 1-2 weeks to get into TRUE starvation mode......where your metabolism will drop to almost nothing to save the energy and fat stores for survival.....hopefully none of us would get to that point

this is why the body has several organs that produce and secrete glucose....main energy source for our bodies.....protein is to rebuild while glucose (and others) re-store energy so that you can exercise again tomorrow......
Good luck and don't not eat....life is too short....just make good choices!!!!!