After you drink Kava, it is customary to clap 3 times in appreciation :)
Kava is used to calm anxiety, stress, and restlessness, and treat sleep problems (insomnia). It is also used for attention deficit-hyperactivity disorder (ADHD), epilepsy, psychosis, depression, migraines and other headaches, chronic fatigue syndrome (CFS), common cold and other respiratory tract infections, tuberculosis, muscle pain, and cancer prevention. It is also banned in many countries for ill effects.