COR-Performance Series. Build • Sustain • Recover. 10g BCAAs. 5g Leucine. 3.2g Beta Alanine. 4g Citrulline Malate. Cellucor COR-Performance ß-BCAA features clinically studied doses of BCAAs Beta Alanine Citrulline and HICA which are proven to help athletes build muscle sustain maximum output and recover from intense training and sports activities. Beta Alanine is known for the 'tingling' sensation most users feel after consumption. Cellucor COR-Performance ß-BCAA uses a clinically studied 3.2 g dose of Beta Alanine to deliver maximum results and a great activation feeling that let's you know the product is 'kicking in.' The vast majority of Beta Alanine users report a slight tingling sensation after ingestion. If you don't feel the 'tingles' don't worry the product is still hard at work to maximize your workout.