Celsius was invented by a guy named John L. Ahern in 2004. He wanted a “thermogenic” drink that heats up your metabolism. It literally raises your body temperature by a fraction of a degree.
Imagine fasting and sipping a drink that makes you warmer. You’re basically a human furnace. That’s hilarious.
Also, the can says “No Preservatives.” But it has chromium—a mineral that helps control blood sugar. That mineral might actually stabilize your fast. Weird flex, but okay.
The Verdict: Yes? No? Maybe?
The honest answer? It depends on your fasting goal.
If you’re fasting for weight loss, a Celsius is likely fine. It won’t spike your blood sugar or pack in carbs. You’ll still burn fat.
Does Celsius Energy Drink Break a Fast? | Lifeboost Coffee
If you’re fasting for autophagy (cell repair), you might want to avoid it. That tiny insulin response could pause the cleanup process. But—plot twist—the caffeine might boost it anyway. Science is messy.
If you’re fasting for spiritual reasons, well, the universe probably doesn’t care about sucralose. Drink your Celsius. Just don’t call it a “prayer.”
