Understanding What is CISN Nutrition: Integrative vs. Certified
                                
                                
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                                    4 min read                                
                            
                                According to the Centre for Integrative Sports Nutrition, between 30% and 50% of endurance athletes experience gastrointestinal problems during exercise. Understanding what is CISN nutrition is critical for grasping two distinct concepts in the field: the holistic, system-based approach of the Centre for Integrative Sports Nutrition and the scientific-focused CISSN professional certification from the ISSN.