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 What Is The Speed of Dark? That Couldn't Just Be Coincidence! What If You Stopped Drinking Water? We Can Use Graphene Oxide to Desalinate Seawater The Science Behind Kissing Is Big Data Getting Too Big?