Not all yawns are created equal: you're more likely to 'catch' a yawn from a family member than a stranger, researchers report.
Source: http://www.cosmosmagazine.com/news/5101/contagious-yawning-stronger-amongst-family
Dido Diora Baird Dita Von Teese Dominique Swain Donna Feldman Drea de Matteo Drew Barrymore Ehrinn Cummings
