Mo

Yes—sugary energy drinks break a fast; zero-calorie energy drinks may not, but sweeteners or added nutrients can undercut fasting goals.

No, sugar-free Red Bull can break a strict fast; sweeteners and trace calories make it a poor pick for zero-calorie fasting.

Yes, allulose counts as calories for strict fasting, but small doses show minimal glucose or insulin impact for most people.

Yes, celery breaks a strict fast because celery adds calories; one large stalk has about 9 calories.

Yes—regular Monster breaks a fast; zero-sugar Monster usually doesn’t, since it has virtually no calories.

Yes—Monster Ultra breaks a strict fast; some goal-based fasts still permit it in small amounts.

No, Bang Energy Drink is zero-calorie, so calories won’t break a fast; sweeteners and 300 mg caffeine can still nudge certain fasting goals.

Most zero-calorie sweeteners don’t break a calorie fast, but some trigger insulin or contain fillers that end a strict fast.

Yes—one clove of garlic has a few calories, so a strict fast is broken; for time-restricted fasting, skip it during the fasting window.

Yes, diet soda usually fits intermittent fasting, though some sweeteners may nudge insulin in a few people.