In a study conducted by researchers at the National Institute of Industrial Health of the Japanese Ministry of Labor and The St. Marianna Medical Institute, 447 industrial workers of Sumitomo Heavy Industries were taught Transcendental Mediatation and compared with 321 workers who did not learn the practice. The Transcendental Meditation group showed significantly decreased physical complaints, decreased impulsiveness, decreased emotional instability, decreased neurotic tendancies, decreased anxiety, and also decreased insomnia. Reference I: Japanese Journal of Industrial Health 32 (1990): 656. Reference II: Japanese Journal of Public Health 37 (1990) - See more at: http://tmsw.org.uk/tmhampshiremic.org.uk/index.php/proven-benefits/research-on-the-body#sthash.IYPENMAZ.dpuf