(THEGUARDIAN) — By the time you finish this article, your brain will have changed. Something you read or something that happens while you’re trying to focus on these words will go on to have an impact on your day.

If that event happens to be stressful – maybe you are interrupted by loud colleagues or a loved one calls with bad news – it can trigger a series of more stressful events such as choosing something unhealthy to eat or being unintentionally rude to a friend or co-worker.

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