Can you have pre-workout while intermittent fasting?
Pre-workout may break a fast depending on calories, sugar, amino acids, and sweeteners.
Step by step
The longer answer
Pre-workout may break a fast depending on calories, sugar, amino acids, and sweeteners. In everyday intermittent fasting, the easiest rule is to keep the fasting window to water, plain tea, and black coffee unless you intentionally follow a modified fast. Track the choice so you can see whether it affects cravings or consistency.
If pre-workout makes you hungrier, switch back to water, plain tea, or black coffee for a cleaner test.
Changing the rule for pre-workout every day and then not knowing what actually helped.
Track the fasting window, pre-workout, hunger, energy, and whether you finished the fast.
Educational only. People who are pregnant, breastfeeding, under 18, have diabetes, take glucose-affecting medication, have a history of eating disorders, or feel unwell should speak with a qualified clinician before fasting.