Grimacing Or Smiling Can Make An Injection Feel Less Painful

If you’re preparing to receive a flu vaccine — or even a Covid-19 vaccine — this winter, you’ll be interested in the results of a new study that investigates whether it’s better to smile or grimace your way through the pain of an injection.

The researchers found that people who grimaced or performed a “Duchenne” smile, which incorporates muscles around the eyes, both reported less pain compared to those who simply held a neutral expression. And these expressions seemed to have some interesting effects on stress and heart rates as well. Continue reading →

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