Another round

A history teacher, a psychologist, a music teacher, and a physical education teacher gather at a restaurant to celebrate the 40th birthday of one of them. They decide to test a scientific theory that suggests that humans suffer from a lack of alcohol in their bloodstream from birth, and that they need to be slightly intoxicated to truly experience happiness. The friends agree to observe the effects of alcohol consumption on their work and personal lives, and they set a rule: no drinking in the evening or on weekends. What could possibly go wrong?