Overhydration in Sports – A Chemistry Refresher
This is a topic that I recently researched and was shocked to learn about. Nowadays, advocating proper hydration is part of the mainstream. Just think about how many people carry a reusable water bottle with them everywhere they go! It didn’t use to be like that. Good job, new generation! However, overhydration is a concept that we rarely talk about, but it’s a genuine concern in athletics. In 1969 guidelines began to advise athletes to drink “beyond thirst” and “as much as tolerable” in an effort to stave off heat strokes. Around this time, the first energy drink was developed with the intent of preventing “heat illness”. However, many deaths have been attributed to these recommendations to drink, drink, drink during exercise. Why? Because they can cause hyponatremia , or low blood sodium. The interaction between sodium and potassium is responsible for keeping fluids balanced inside and outside our cells. Sodium exists primarily outside the cells and potass...