Is not it time you leave? (Psychological test)

On the accompanying photo shows two dolphins.
It was used as an illustration in the study of stress conditions in St Mary's Hospital.
Look at the two dolphins jumping out of the water.
As established by the example of the experimental group, despite the fact that dolphins are identical, the person who is under stress, they find differences.
If a person finds many differences, so it feels great stress.
Look at the picture.
If you have more than two dolphins in the differences, then you urgently need a vacation.