Improved athletic performance: Ornithine, Arginine, Lysine, and Citrulline have all been shown to help improve athletic performance by increasing energy levels, reducing fatigue, and enhancing muscle recovery. Enhanced immune function: These amino acids can help to boost your immune system by increasing the production of white blood cells and other immune cells. Improved cardiovascular health: Ornithine, Arginine, Lysine, and Citrulline can help to improve cardiovascular health by reducing blood pressure, improving blood flow, and reducing the risk of heart disease. Increased growth hormone production: These amino acids can help to increase the production of growth hormone, which can help to promote muscle growth, reduce body fat, and improve overall body composition. Improved sleep quality:Ornithine, Arginine, Lysine, and Citrulline can help to improve sleep quality by increasing the production of melatonin, a hormone that regulates sleep.