What Causes the ‘Sigh’ of Relaxation?

We sigh when we're relaxed because it helps us feel calm inside. When your body feels tired, a big breath comes in, and then you let it out with a sigh. This makes your chest feel light and gives your brain a little break, just like taking a nap after playing too long.

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Examples

After finishing your favorite snack, you let out a big sigh and feel relaxed.
You sigh when you finally sit down after walking all day.
Your friend lets out a sigh after laughing at a joke, it makes them look more relaxed.

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Categories: Health · relaxation,breathing,physiology