A shipmate of mine passed along a unique stress test. And, it works, by gosh.
The picture posted here has 2 identical dolphins in it. It was used in a case study on stress levels at Loma Linda Medical Center.
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. The number of differences observed matches closely to the amount of stress the observer is experiencing.
Look at the photograph and if you find more than one or two differences you may be experiencing stress.
Damn accurate, I'm sure you'd admit. Certainly helped me assess my stress level.