This study analyzed the impact of a biofeedback intervention with athletes in sport, specifically those returning to play from a concussion. Although return to play protocols address the physical symptoms related to concussion (i.e., a mild traumatic brain injury), psychological issues related to the injury are often not addressed. Biofeedback is the use of technical equipment to assist an individual to understand physiology through immediate feedback of an action or stimulus and has been found to assist athletes with focus and concentration. In this study, a total of six athletes were recruited to complete a 12-week biofeedback (i.e., breathing) intervention. In addition to physiological markers, focus groups were also used before and after the intervention. The results point to the positive impact of the intervention, particularly the qualitative component. Participants expressed improvements related to anxiety, fear, anger, and relationships with family and friends. Limitations and future directions are discussed. / October 2016