How Does Carb Up Work? The Science of Glycogen Supercompensation
                                
                                
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                                    4 min read                                
                            
                                According to research, carbohydrate loading can improve endurance performance by 2-3% in events lasting longer than 90 minutes. This highlights the physiological impact of this strategy, but many wonder how does carb up work on a cellular level to create this effect.