It is believed that thiscalibrationis suitable forX-raystressconstantmeasurement for varioussurface-reinforced elements, whose surface layer structurehas changed radically.
Another theory says that the stress of having to pay constant attention to survive leads to Third Man hallucinations.
VOA: special.2010.02.24
With results or sometimes the lack thereof is the stress of constant media and fan attention and second guessing, the need to stay true to your philosophy when things are not going well and never letting players see you sweat even in the most trying circumstances.