Mo

It depends on your goal: religious fasts are broken by smoking, while calorie-based fasts aren’t since cigarettes add no calories.

Yes, plain creatine monohydrate in water doesn’t break a metabolic fast; flavored or sugary mixes can end a strict fasting window.

Yes, Cbum pre-workout breaks a strict fast; each scoop has ~5 calories and sweeteners that may nudge a metabolic response.

Yes, Bloom pre-workout can break a fast depending on your fasting goal and the specific formula.

Yes—most C4 pre-workouts end a strict fast, though “zero-calorie” versions may fit looser fasting styles.

Yes, ColonBroom breaks a strict fast for autophagy, but many fasting styles still allow it.

Yes, Berocca breaks a strict intermittent fast, since one tablet has ~5–8 calories and sweeteners; take it in your eating window.

Yes, AG1 breaks an intermittent fast under strict zero-calorie rules; one serving has about 40 calories.

Yes—most creatine gummies break a fast because they contain sugars and gelatin; zero-sugar versions may fit a calorie fast if labels truly show no energy.