"One book is not enough for me. It clearly violates my religious rights," he said. He also argued that meal breaks were too short.
Navalny has frequently used such hearings in the past as a means of defying the authorities, demonstrating his resilience and maintaining a link to the outside world.
He and his supporters say the many charges against him were trumped up to silence his criticism of President Vladimir Putin. The Kremlin says he is a convicted criminal whose treatment is a matter for the prison system.
