On: John Carmack on shorter work weeks (2016)

[pizzapill]

I don't think that's how you lose fat. You get rid of the exhaust generated during the chemical fat burning process. If you couldn't exhale you would still burn fat.

[FredPret → pizzapill]

In: O2

Out: CO2

That extra C atom comes from your metabolism. If you're in a calorie deficit, it has to come from your C atom reserve storage.

[palata → FredPret]

You miss the point of the parent, which is that exhaling is not a chemical process. The point being that the CO2 you exhale is "somehow produced by something", and once it's there you have to exhale it.

That's a way of saying that breathing faster won't burn more fat just because of the breathing: burning fat is a bit more elaborate than that.

[dragonwriter → palata]

> That's a way of saying that breathing faster won't burn more fat just because of the breathing

Which is wrong, since breathing involves pumping air with your muscles.

[palata → dragonwriter]

Not sure if you got my point but wanted to be pedantic, or didn't get my point at all.

[onion2k → FredPret]

If you're in a calorie deficit, it has to come from your C atom reserve storage.

Yes, and that will be your muscle mass as well as body fat if you're not exercising and maintaining a decent protein intake.