Why Is Yawning Contagious? Why do we yawn? If you thought that it is because we need more oxygen, you were wrong. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Can You Really Die of Old Age? This Chimpanzee Will Beat You at Memory Games Why do taxpayers pay billions for football stadiums? How Scientists See Through Walls Using Particles From Space This plane could cross the Atlantic in 3.5 hours. Why did it fail? What’s the Right Amount of Eye Contact?