According to Boston.com, a research team from the University of Georgia had students demonstrate self-control by making them do mind-numbing tasks. Before their trials, the students gargled lemonade, half with real sugar and the other half with Splenda. According to the study, the students with the sugary lemonade were “significantly faster” at their tasks than the students in the Splenda group.
“After this trial, it seems that glucose stimulates the simple carbohydrate sensors on the tongue,” said psychology professor Leonard Martin. “This, in turn, signals the motivational centers of the brain where our self-related goals are represented.”
Martin says gargling the sugar water helps people focus and strengthens their resolve to do something irksome.
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