eli5 why do we rub our eyes when we’re tired?

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There is no foreign body to trigger the rubbing, it seemingly has no use to rub the eyes. Why do we do it then?

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Anonymous 0 Comments

Why Does Rubbing Tired Eyes Feel Good? – YouTube https://m.youtube.com/watch?v=iZP-E1JUrmc

TLDW: It moistens eyes and lowers heart rate.

Anonymous 0 Comments

Rubbing your eyes can feel good when you’re tired because it can stimulate the blood flow to the eye and make you feel more awake. It can also help to remove any dust or debris that might be irritating your eyes.

Anonymous 0 Comments

The pressure applied to the eyes stimulate a nerve that sends a signal to the heart to slow down, which will relax us and make us ready to sleep.