A spoonful of sugar makes the willpower go up, according to a series of studies that have suggested fueling the brain with sweets can strengthen self-control. Now, new research finds that sugar's potential may be greater than expected: You don't even need to swallow to get the benefits of sweetness.
Simply swishing a glucose-laden drink in the mouth and spitting it out boosted self-control and willpower for tasks from squeezing a handgrip to completing impossible brain teasers, the new study found.
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