Are you doing a strict autophagy fast for cellular repair? Then maybe skip the Celsius. Some research suggests that even artificial sweeteners (Celsius uses sucralose and erythritol) might dampen autophagy in high doses. But if you’re just skipping breakfast for time or weight loss? Go for it—the energy boost will make your morning way more fun.
Think of it this way: Fasting doesn’t have to be miserable. A cold Celsius can turn a grumpy morning into a productive one. You’re not failing at fasting—you’re hacking it to work with your life. That’s the whole point of modern wellness, right?
What About the “Clean Fast” Rules?
Strict fasters say: water, black coffee, or plain tea only. But honestly? That’s a little rigid for most of us. Celsius is closer to a sparkling green tea than a soda. And if you’re using it to crush a workout or a work project, you’re winning at life, not cheating.
Does Celsius Break a Fast? Exploring the Impact on Intermittent Fasting
One big caveat: Check your body’s reaction. Some people get jittery on green tea extract or feel hungry after artificial sweeteners. If Celsius leaves you ravenous two hours later, it’s not worth it. But if it keeps you fueled and focused? You’re golden.
Also: Flavored Celsius like “Sparkling Wild Berry” are technically zero-calorie, so they won’t break a strict calorie-based fast. Just avoid the “Vibe” line with 10 calories—that’s pushing it for purists.
