Does a Non-Stim Pre-Workout Have Caffeine?
                                
                                
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                                    4 min read                                
                            
                                According to sports nutrition experts, the main difference between a regular pre-workout and a non-stim version is the presence of caffeine. A non-stim pre-workout, by its very definition, does not contain caffeine or other central nervous system stimulants. It is designed to boost athletic performance through different physiological mechanisms.