This randomized controlled trial will explore the effects of an HRV biofeedback (HRVB) training session with a modified waitlist control in a population of Hematopoietic cell transplantation (HCT) patients. We will secondarily explore effects of a brief storytelling intervention, with or without the prior HRVB training. Two group of 10 HCT patients over the age of 18 will be recruited and enrolled into the study. The time of participating in this study will be 2-week proposed activities from the time of enrollment to completion. Specific participation will include baseline data collection (about 30 minutes), HRVB training session (30 minutes), watching and discussing stories (15 min for each week= 30 minutes) and one final data collection (about 30 minutes) at the end. For HRVB group, participants will be instructed to practice their HRV biofeedback skills at home for 10 minutes each day for a two-week period (about 140 minutes). Lab visit is required only twice for baseline data collection and final data collection. Other works will be via internet.
