Do we exhale fat?

Yes, when we lose fat, part of the process involves exhaling carbon atoms as carbon dioxide. In discussing fat loss, Andrew Huberman explains that when you are in a state where you are burning more calories than you consume (a caloric deficit), the fat you lose is converted into carbon dioxide (CO2) and water (H2O). This carbon dioxide is then exhaled. However, Huberman also explores whether actively manipulating breathing (like purposely extending exhales) could boost the rate of fat loss. Although intriguing, the consensus is that while breath-related exercises like hyperventilation can increase metabolic processes (like adrenaline release), they are not sustainable or practical methods to enhance fat loss significantly. Effective fat loss primarily relies on consistent adherence to caloric deficit and physical activity, not merely the way one breathes 1 2 3.