And by stabilizing the transition state, that releases a certain amount of binding energy into the environment and that decreases the energy of that transition state. It lowers the energy of the transition state and that's what lowers the activation energy. And by lowering the activation energy, we speed up the rate of that particular reaction. So this is the general mechanism by which enzymes actually function. Now, we know the general idea of what enzymes actually do, but what exactly happens inside the active sites of these enzymes? So we have all these different types of enzymes down inside our body.