A new study has revealed that people who have recently consumed a sugary drink are more successful at negotiating a pay rise that those who do so on an empty stomach. “Researchers at the University of South Dakota asked 65 students to answer a series of questions in which they had to choose between getting a smaller sum of money ‘tomorrow’ or a larger sum in the future. The study participants responded to half the questions on an empty stomach and the other half after consuming a caffeine-free soda sweetened either with sugar or the artificial sweetener aspartame. Blood glucose levels were measured at the start of the experiment and after the volunteers drank the soda. ‘Within 10 minutes of drinking a sugary soda, participants’ interest in a larger, future reward was higher,’ Xiao-Tian Wang, one of the psychological scientists who led the study, told AFP. ‘It’s like when you eat: if your blood sugar’s high, you can wait longer to eat,’ Wang said. ‘We did the study to see if the blood glucose level not only regulates eating behavior but also decision-making. In other words, can you wait longer to get a bigger reward when your blood glucose levels are higher?’”
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