Did we make you yawn? Discover the science behind yawning.
Chapters:
0:00 Intro
0:38 Dogs will sympathy yawn with their owners?
1:23 What is the medical name for what happens when we yawn?
2:13 When do we start yawning?
3:15 Outro
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This post first appeared on Dherbs - Herbal Supplements, Herbal Remedies, Natural Healing Remedies, Full Body Detox, please read the originial post: here
