Pool tokens are also used as collateral. Borrowers collateralize pool tokens they receive from depositing assets in the lending pool. Once they repay their loan (or a portion of their loan), they can withdraw their collateralized pool tokens (or a portion of their collateralized pool tokens). Because pool tokens are used as collateral, YieldBlox can lend the underlying assets associated with collateralized pool tokens. As a result, borrowers receive interest on collateral deposits.