Essential video portal focusing on human nature, promoting healthy skepticism, critical thinking and reason.

SLEEP & DREAMS


The Drive to Sleep

The Drive to Sleep

[3:01] Dr. Rochelle Zak talks about what causes us to sleep, and why it is sometimes difficult to fall asleep even when we …

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Why is yawning contagious?

Why is yawning contagious?

[4:28] *Yaaawwwwwn* Did just reading the word make you feel like yawning yourself? Known as contagious yawning, the re…

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Why do we dream?

Why do we dream?

[5:38] In the 3rd millennium BCE, Mesopotamian kings recorded and interpreted their dreams on wax tablets. In the year…

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