The picture below has two identical dolphins in it. Look at it closely and you will see all the similarities; actually one dolphin is a clone of the other. It was used in a case study on stress level at St. Mary's Hospital. Look at both dolphins jumping out of the water. The dolphins are identical.
A closely monitored, scientific study of a group revealed that in spite of the fact that the dolphins are identical; a person under stress would find differences in the two dolphins. If there are many differences found between both dolphins, it means that the person is experiencing a great amount of stress. Look at the photograph and if you find more than one or two differences you may want to take a vacation, or see a stress specialist.