What is the difference between hypertonic and isotonic gels?
                                
                                
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                                    4 min read                                
                            
                                According to sports science, the 'tonicity' of a solution, which measures the concentration of solutes like carbohydrates and electrolytes, determines how the body absorbs it. This fundamental principle is the basis for understanding the difference between hypertonic and isotonic gels, and how each affects your fueling strategy during exercise.