TBJP In-SureWhat does insure do? Insure can help increase sensitivity of the muscle cell to aid in efficient uptake of carbohydrates, this results in less fat gain and less insulin demand, resulting in much greater overall health. Its an important supplement for anyone looking to gain muscle , but keep fat gains to a minimum. How does it do this? When we eat carbohydrates , our body will release insulin to store these as glycogen in the muscle and the liver.