Velofel And it is true that pound for pound, we do have larger brains than other animals. When we see a brain on say a CSI television program Testosterone Booster we can see it looks like a wrinkled bag containing all its bits and pieces. What I didn't know until my research is that this outer covering is our brain - and that the things inside are not much value at all. Our brain or cortex is mostly the 3 millimeters skin bag that holds everything in.