Yawn and feel a sense of togetherness!!

• When a person yawns, he equalizes the pressure in his middle ear. This causes a small, localised pressure change around him, which affects others in the vicinity - and therefore they have to yawn to equalize the pressure in their own middle ears.
• The control center for yawning in the brain sends signals for yawn on identifying fatigue, inertia, sleepiness or boredom. When we see somebody yawning this visual hint stimulates our brain to identify our own tiredness etc. if it has not already done and to send signal to lungs for yawning – and there it is! Yawn…!
• We often become afraid when we see someone else showing fear. We laugh because everyone around us is laughing. We yawn because someone around us is yawning!!!