Aubin discovered his true passion: understanding exercise physiology in the service of well-being and performance. After earning his Master's degree and completing long-term internships in professional structures such as a National Training Center, high-level educational programs, and finally a Top French rugby club, Aubin decided to pursue a career in rugby.

As the performance manager of top women's rugby club, Aubin had the opportunity to monitor the rehabilitation of injured players in collaboration with the medical staff. Through managing the recovery and motivation, Aubin found his passion for personalized coaching with specific goals.