Stress measurement is a research area that focuses on developing methods and tools to accurately assess and measure levels of stress experienced by individuals. This research may encompass both physiological measures, such as heart rate variability and cortisol levels, as well as psychological measures, such as self-reported stress questionnaires and behavioral assessments. The goal of stress measurement research is to provide researchers, healthcare professionals, and individuals with reliable and valid ways to monitor and track stress levels in order to better understand its impact on health and well-being.