Inside Sports Drinks (Just the Science)
Carmichael Training Systems
A sports drink is essentially water with stuff dissolved in it. Some drinks have lots of different kinds of stuff dissolved in them, some of which just waste space. There is only so much room to dissolve solutes in a drink, and drinks with fewer ingredients can use more of that room for important things such as carbohydrate and sodium. The simplest drinks are the best because they are easiest on the gut and facilitate the transport of sugar and electrolyte across the semipermeable membrane of the intestinal wall better and faster...
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