The Science Behind Contagious Yawning. Why do we yawn when we see some one else yawn? The Wise Doctor 0:57 10 months ago 22 Скачать Далее
The Science Behind Contagious Yawning: Why Do People Yawn When They See Others Do So? Curiosity Unleashed 5:09 1 year ago 37 Скачать Далее
Why Is Yawning Contagious? - Instant Egghead #52 Scientific American 2:36 10 years ago 25 760 Скачать Далее
Why Do We Yawn If Someone Else Does (IS YAWNING CONTAGIOUS ? ) Natural Health Remedies 1:49 3 years ago 2 593 Скачать Далее
Why is yawning contagious? Your yawn reflex, explained. | JUST CURIOUS USA TODAY 1:08 9 months ago 6 235 Скачать Далее
Why Do We Yawn? The Surprising Science Behind Contagious Yawning Stay Interested 4:18 5 years ago 511 Скачать Далее
Why do we Yawn ? Science behind Yawning SCIENCE COLLECTOR Science Collector 2:11 1 year ago 96 Скачать Далее