Why Do Humans Have a 'Third Eye'?

Your body has a 'third eye' because it wants to know when it's time to sleep or wake up. It lives in your brain, behind your eyes, and it uses light like a clock to help you keep track of the day. When it sees daylight, it tells your brain it’s morning, and when it gets dark, it says it’s bedtime.

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Examples

A child stays up too late playing video games because their 'third eye' doesn't get enough dark time to tell them it’s bedtime.
Your mom tells you it's time to go to bed, but your brain says it's still morning, your third eye is confused by the bright screen light.
When a person travels across time zones, their third eye gets out of sync with the new day-night cycle, making it hard to sleep.

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Categories: Health · pineal gland· melatonin· biological rhythms· human evolution