Think about it: calories are a measure of energy that your body can burn. They come from things like carbs, fats, and proteins.
Water? It’s just two hydrogen atoms and one oxygen atom—H₂O. There’s no carbon backbone, no sugar, no fat. Your body can’t “burn” water for fuel.
Instead, water does something even more critical: it keeps you alive. It regulates your temperature, lubricates your joints, and helps flush out waste. No calories required.