Health benefits of Yawning

Yawning is a natural practice which is experienced by all the people from babies to oldies in their life. It is considered to be an indication of tiredness, boredom or sleepiness. Yawning is contagious means if you see somebody yawning you will yawn too. Even if you read about yawning you will get the same reaction. As per Discovery Health, fifty five percent people yawn within 5 mins if 1