He and his wife express how each has drawn away from the other, and she admits to infidelity. Martin's family express their worries, revealing that they knew he has been drinking for weeks. Still finding their lives improved, one night they decide to drink to oblivion to test the liberating effects, but after coming home incapacitated, both Martin and Nikolaj are confronted by their families. Agreeing that the experiment should be taken further, the group increases the daily BAC limit to 0.10. He teaches history through the lens of drinking alcohol, connecting with heavy drinking students. His teaching of history becomes inspired, and his students begin enjoying class and respecting him. Martin, in particular, is delighted as he finally manages to reconnect with his wife and children. Within a short period of time, all four members of the group find both their work and private lives more enjoyable and successful. They agree to a set of rules: their BAC should never be below 0.05 and they should not drink after 8:00pm or on the weekends. Each man has their own way of sneaking alcohol during the day while teaching or coaching children, but they never drink and drive. Yet, they each have personal challenges that makes this experiment attractive: Martin is depressed and alienated from his family and students, Nikolaj's wife seems to have contempt for him, etc. They start a group log of what occurs when they start drinking at regular intervals to maintain this blood alcohol level. The friends decide to embark on an experiment to test Skårderud's theory. Martin is confronted by his senior students and parents, who express that he has become a barrier to them passing their history exams. At a dinner celebrating Nikolaj's 40th birthday, the group begins to discuss theory of psychiatrist Finn Skårderud - that humans are born with a blood alcohol content (BAC) deficiency of 0.05%, and that being at 0.05% makes one more creative and relaxed. All four struggle with unmotivated students and feel that their lives have become boring and stale. Teachers Martin, Tommy, Peter, and Nikolaj are colleagues and friends that work at a gymnasium school in Copenhagen.