The scientists at Ultimate Nutrition researched and developed a balanced thermogenic formula - Ultra Ripped. Thermogenesis means the increase of the metabolic rate. Citrus aurantium delivers a unique combination of five adrenergic amines (synephrine, N-methyltyramine, hordenine, octopamin and tyramine) to stimulate Beta-3 Receptors that increase the rate at which fat is released from the body stores (Lipolysis) and increase the resting metabolic rate. At the same time Garcinia Extract which contains hydroxy citric acid (HCA), increases the production and storage of Glycogen while reducing both appetite and weight gain. HCA also causes calories to be burned in an energy cycle similar to thermogenesis. White Willow Bark Extract, standardized for Salicin, provides a synergistic action in elevating energy expenditure. Studies have suggested that salicin when used in combination with other thermogenic supplements, helps promote increased fat oxidation. Green Tea has been found to be an excellent source of natural caffeine, and potent Polyphenols (Catechins) especially Epigalloocatechin Gallate (EGCG). They activate the central nervous system, which elevates the body´s ability to burn calories and unwanted fat cells through the thermogenic process. Similar to Green Tea, Brazilian Guarana, a great source of natural caffeine acts synergistically with other ingredients of Ultra Ripped, to promote thermogenesis.