An add Elevate IGF ional 220 Kcal is needed: Elevate IGF this is a cost that we also have to pay if we want the body to get down to work. Taking into account that a pound of muscle (0.455 kg) is achieved w Elevate IGF h 100 g of protein synthesized, to gain that amount of muscle mass in a month would require a surplus of 22,000 Kcal above maintenance needs (which comes to Assuming a surplus of 733.3 Kcal / day).