20 of the most contagious yawns. This selection was made by a photographer and editor, who indulged in the work that was left on the screen at night editor picture with yawning person or animal.
You can make fun of your friends and colleagues.
1. Ussuri tiger yawns at the zoo in Saint-Felicien, Canada. REUTERS / Mathieu Belanger
2. Tibetan spiritual leader the Dalai Lama yawns during a visit to a school for Tibetan children in Kalimpong, India. AFP PHOTO / Diptendu DUTTA
3. The American pop star Madonna (left) with her daughter Lourdes at the opening ceremony of the construction of the Academy for girls in Malawi. AP Photo / Tsvangirayi Mukwazhi
4. American Michelle Wie yawns during the tournament of the Professional Women's Association golfers in Thailand. Victor Fraile / Getty Images