In this chapter, we learn that it's going to be hard for Jack to complete the first dive in two days. He's worried that he's not going to reach the target depth, which is 10 meters, in time for the second dive. He tells Jack to think of this time as a "testing out the waters" and not to worry about the actual dive itself. Jack says he'll eat whatever he wants, even if it means pooping on his face. He also tells Jack that freediving is a mental sport, meaning that you have to be mentally strong in order to do it.