 It's to eat the portions of our food that is not digestible by humans, by us. And then it's to secrete and give us these nutrients that are then going to be helpful for us. I already mentioned butyrate. Now, one thing that butyrate is extremely important for. Now, I'm going to say this is extremely important. So anytime I say extremely important, you really need to pay attention. I talked about leaky gut. Now, leaky gut is when those gap junctions, right, the fingers start to split apart. It's allowing undigested food and other things to get into the blood.