Yawning makes one more alert!

                                       

                     There is evidence that yawning jump starts the body for a main event. There have been so much yawning during the Olympics, and it was not because the athletes were bored or tired.                      

                   Yawning routes extra surge of blood to the brain and prepares the body for major activity. These may be the same reason why paratroopers yawn before the first jump, students yawn before the final exams, and violinists yawn before the start of a concert.