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 Tiny Crystals In Our Brain Could Unlock Psychic Powers Why Are There Lakes In This Desert? Discover an Undersea Laboratory Could A Sunken Continent Explain The Spread Of Lemurs Across The World? Thorium and why we don’t use it for nuclear power Will YouTube ever run out of video IDs?