The BCAA shot supports performance by minimising muscle protein breakdown during exercise. It has been well documented that exercise increase protein breakdown, while BCAAs also act as an energy source during endurance exercise. These two processes can have a negative effect on performance. The delivery of BCAAs + Arginine, such as those found in the Science in Sport BCAA Shot, can guard against these negative effects. Use one BCAA shot before or during endurance exercise to reduce muscle protein breakdown and support performance.