Fat contains long hydrocarbon H-C-H chains (with other stuff at the end). When it’s broken down to release energy, it combines with (3) oxygen O2 molecules, making H=O=H (water, H2O) that you sweat, pee or breathe out, and O=C=O (carbon dioxide) that your breathe out. Carbon accounts for significantly more of the weight than the hydrogen and it’s in this sense that you breathe it out.
If you breathe significantly more without exercise, you’ll hyperventilate, which I’m sure is even less fun than the exercise in lengthy doses, and I don’t think you’ll lose weight.
Fat contains long hydrocarbon H-C-H chains (with other stuff at the end). When it’s broken down to release energy, it combines with (3) oxygen O2 molecules, making H=O=H (water, H2O) that you sweat, pee or breathe out, and O=C=O (carbon dioxide) that your breathe out. Carbon accounts for significantly more of the weight than the hydrogen and it’s in this sense that you breathe it out.
If you breathe significantly more without exercise, you’ll hyperventilate, which I’m sure is even less fun than the exercise in lengthy doses, and I don’t think you’ll lose weight.