Sports drinks are thought to boost performance by providing necessary water, salts and sugars for an energy boost. But a new study suggests they might help even if you spit them out. Trained cyclists preformed a test a minute faster after swilling and spitting a drink with glucose — a prime energy producing sugar — compared to those given the artificial sweetener saccharin. Apparently, receptors in the mouth note the sugars and send performance-boosting reward and pleasure signals to the brain. One might ask, however: Why not just drink the stuff?
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