 A study done by the "American Journal of Human Biology" found that speaking in tongues was associated with both a reduction in circulatory cortisol, and enhancements in alpha-amylase enzyme activitytwo common biomarkers of stress reduction that can be measured in saliva.This supports sociological studies that report various social benefits to engaging in Pentecostal glossolalia, such as an increase in self-confidence.Adriano Celentano's 1972 song "Prisencolinensinainciusol" is an Italian song purposely written in mock-up English.