From Wikipedia, the free encyclopedia. The unit of analysis is the major entity that is being analyzed in a study. It is the 'what' or 'who' that is being studied. In social science research, typical units of analysis include individuals (most common), groups, social organizations and social artifacts.
Exercise is exertion. noun. Exertion is defined as physical or mental effort, or to the use of force or influence. Doing an extremely hard crossword puzzle that taxes your brain is an example of mental exertion.
In chronic fatigue syndrome, post-exertional malaise is a period of intense exhaustion and a spike in other symptoms that lasts for more than 24 hours following physical exertion, along with an inability to exercise as vigorously during that time. Some people say they experience it after mental exertion as well.