In preparation for her upcoming UFC title match, UFC 299, professional fighter Katlyn Cerminara (Katlyn Chookagian), came to us to enhance her training and recovery. With the goal of optimizing her athletic potential, we administered hyperbaric oxygen therapy (HBOT) for 2 weeks. The focus of her treatment was on enhancing her endurance, expediting recovery, improving reaction time and fortifying overall physical resilience. This case study looks into the impact of HBOT on Katlyn's training, and recovery.