The Stress Level column is a flexible health measure calculated as a sum of weights assigned to different columns. For example, the “CPU” column might add 2 points to the Stress Level when it crosses the 70% threshold, while the “Disk Queue” column might add 3 points after crossing the threshold of 2. In order to investigate the reason for a current Stress Level value of a record, click on the Stress Level cell and then click on the triangle in the upper right corner of the cell. You will see a list of counters and their contributions to the total Stress Level of the record. You can configure this behavior by clicking on the “Stress Level” button, located on the ribbon bar. The same is possible for any performance counter cell not at the “green” level.