Who Should Avoid C4 Pre-Workout? A Comprehensive Guide to Safety
                                
                                
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                                    4 min read                                
                            
                                According to research published in the journal *Nutrients*, pre-workout supplements containing high doses of stimulants can increase heart rate and blood pressure, potentially causing adverse effects in sensitive individuals. It is critical to understand who should avoid C4 pre-workout, and other stimulant-heavy formulas, to prevent health complications and ensure safe exercise.