The purpose of this study was to investigate the effect of elicited emotion on heart rate variability (HRV). In this study which was an semi-experimental research. 92 subjects whose age range was 20-40 years participated voluntarily and they were put purposefully in experimental group. The research tools included Procomp HRV Biofeedback. https://herbsdailyes.shop/product-category/specimen-collection-specimen-collection-devices/