Curiosities: How many times does a person blink per minute and why?

By Eddy Montilla.

EYELASHES

When you blink, you shut and open your eyes quickly, in fact, quicker than the proverb “in the blink of an eye”, because a blink only takes one third of a second. We blink for several reasons, for example, to keep the eye clean and moist because if the eyeball dries out, it becomes itchy and irritating. A blink is also a protective mechanism against bright light or particles that could hurt your eyes.

     As for the number of times we blink, I think that we have to be very careful with figures here because the range of blink rate is wide and it depends on different factors and situations. For example, while an infant only blinks one or twice per minute, a person under great stress and anxiety, could blink 40 or 50 times, and if you are very concentrated on something, you will not blink more than 20. But if you still want something more specific, a person blinks on average between 15 and 20 times per minute, 900 and 1200 times in an hour.

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