O2score is a sport’s science Company present on the market with an integrated solution allowing to self-quantify a critical recuperation parameter linked to oxidative stress. Using this system –comprising a device and its connected software - everybody, from professional athletes and coaches to routine sport people, can ameliorate their physical performance while preventing injuries linked to fatigue or over training. Physical exercise induces oxidative stress at the cellular level. Our body constantly and naturally compensates for this kind of imbalance. Fatigue, injuries and lower performance are often the consequences of an incapacity of our antioxidant defense mechanisms to cope with oxidative stress. Our solution - validated through the long-term follow-up of professional athletes and sport's teams - measures the electrochemical redox potential and accurately quantify the "power" of the antioxidant defense system in about 30 seconds. This unique technology makes O2score system the ideal solution as to optimize performance, prevent injuries and manage physical fitness according to individualized objectives.