You blink every few seconds because your eyes need a little magic water to stay happy and healthy. When you blink, tears spread across your eye like a tiny splash of rain, keeping it clean and moist. If we didn’t blink, our eyes would get dry and tired, just like your face after playing in the sun all day!
Examples
- Your eyes feel dry after reading for a long time, so you blink more often.
- When it's windy outside, you blink more to keep dust out of your eyes.
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See also
- How Do Birds Migrate So Far?
- What Causes Hiccups?
- How Can a Single Seed Grow into a Tree?
- Why Do People Have Different Shapes of Faces?
- Why Do We Blink?
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Categories: Biology · eyes,neurology,human body