Having a sugary drink could actually make people sweeter tempered. A team of Australian researchers gave half of a group of volunteers some lemonade sweetened with sugar and half lemonade sweetened with a sweetener. The participants were asked to carry out several stressful tasks before giving a presentation which the researchers criticised to try and provoke the participants. The people who had drunk the sugary lemonade were less likely to snap back at the researchers than those who had drunk the sugar-free version. The researchers thought that the glucose in the sugar boosted the brain's executive functioning helping people to control their impulse to snap at people.
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