Designer Physique Recovery Boost contains BCAAs (branched chain amino acids) which is an essential amino acid comprising of L-leucine, L-isoleucine and L-valine which helps to boost metabolism, increases strength, energy and endurance to train hard through an entire work out with great results. BCAA's help reduces muscle breakdown during training, making it much easier and faster for recovery. The most important time to use BCAAs is before (pre) and during (intra) workout.