Just in case you need another excuse to eat chocolate: It makes doing math easier.
A study at the UK's Northumbria University found that people given a large amount of flavanols – found in chocolate – did mental math more quickly and were less likely to feel tired or mentally drained.
In the study, volunteers first sipped chocolate drinks containing flavanols (part of a group of chemicals called polyphenols, which work by increasing blood to the brain) or a control drink. Then they were given mentally-demanding tasks, such as counting backwards in groups of three from a random number between 800 and 999 generated by a computer. They performed tasks like this for an hour.
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