Catalyst provides a blend of essential branched-chain amino acids and L-glutamine to fuel your body with the muscle-building components it needs.* Catalyst helps repair and protect muscle, and provides the essential amino acids needed to maintain and promote lean body mass, endurance and strength.* Catalyst helps rid the fat and retain muscle when used in combination with a healthy diet, exercise, and other AdvoCare products such as Meal Replacement Shakes or Muscle Gain™ Download English movies for free Download English movies for free.