They do not dissolve in our cytoplasm, the cell. And so what that basically means is when we ingest lipids, they're going to aggregate together. They're going to basically form these bundles, these fat bundles. Now, luckily, as we'll see in the next several lectures, our body has a way to deal with this. We can actually break down those clusters of lipids, and then we can use special enzymes to basically break our lipids. And we break the lipids usually into fatty acids.