Why is that when someone yawns…?
i read a muse article about that once. The yawn reflex is often described as contagious: if one person yawns, this will cause another person to “sympathetically” yawn.[3][10] Observing another person’s yawning face (especially his/her eyes), or even reading about or thinking about yawning, can cause a person to yawn. You could possibly be yawning from reading this section or looking at these pictures.[3][11] However, only about 55% of people in a given audience will respond to such a stimulus; fewer if only the mouth is shown in a visual stimulus.[12]The proximate cause for contagious yawning may lie with mirror neurons, i.e. neurons in the frontal cortex of certain vertebrates, which upon being exposed to a stimulus from conspecific (same species) and occasionally interspecific organisms, activates the same regions in the brain.[13] Mirror neurons have been proposed as a driving force for imitation which lies at the root of much human learning, e.g. language acquisition. Yawning may b
