The document discusses exercising a business continuity management system (BCMS) plan. It explains that exercising is important to ensure plans will work properly in the event of a disaster. The types of exercises are described as well as how to perform an exercise, including defining objectives and scenarios, preparing teams, and documenting results. Exercises should identify any deficiencies and help verify that critical processes can be recovered in a timely manner. Regular exercises are necessary to maintain reliable BCMS plans.