Disclosed is a method for evaluating a physiological state depicting a person's resources, in which method the alternatives of physiological states depicting resources are determined, one or more contexts are selected, one or more variables are selected for each context, in which case in the evaluation the person's physiological information is measured and recorded, the measurement-
background data of the measurement are determined and recorded, a value is defined for a variable of the context, corresponding
temporal periods are defined for each context, and the person's physiological state is determined. Further, in the method a preselected
correlation function is defined, a value is computed for the
correlation function, a reference value is computed for each physiological state, and the physiological state of the person is determined. A corresponding
system employing the method for evaluating a person's physiological state is also disclosed.