<Ol> <Li> Performance - based measures; </Li> <Li> Subjective measures, like questionnaires which aviators answer themselves; and </Li> <Li> Physiological measures, like measurement of heart rate . </Li> </Ol> <Li> Performance - based measures; </Li> <Li> Subjective measures, like questionnaires which aviators answer themselves; and </Li> <Li> Physiological measures, like measurement of heart rate . </Li>

Which of the following is an effective method for managing stress