Fasting rules are simple: no calories. But Celsius is marketed as a “zero-sugar” energy drink. Technically, it has only 10 calories per can.
That’s tiny. But even a whisper of calories can trigger a metabolic response. Your body is a sneaky machine.
Here’s the quirky part: those calories come from ginger root extract and vitamins. Not sugar. So your body doesn’t get a sugar spike. But does it care?
The Science of Sip vs. Fast
When you fast, your body switches to fat-burning mode. It loves that. Then you sip a Celsius.
The caffeine (200mg per can—whew!) hits your system. Your heart rate may increase. That’s fine. But your insulin levels? That’s the real drama.
Some studies say artificial sweeteners—like sucralose in Celsius—can cause a tiny insulin response. Your pancreas might panic. It thinks, “Oh no, sugar incoming!” But there’s none.
That’s a false alarm. Your fast might be technically broken, but not by sugar. Weird, right?
