Cellucor COR-Performance β-BCAA™ features BCAAs, Beta Alanine, Citrulline & HICA, which are proven to help athletes build muscle, sustain maximum output, & recover from intense training & sports activities.* Beta Alanine is known for the ‘tingling’ sensation most users feel after consumption. Cellucor COR-Performance β-BCAA™ uses a clinically studied 1.6g dose of Beta Alanine to deliver maximum results & 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.