A Japanese man has claimed that he slept only for half an hour every day for almost 12 years, believing this would “double” ...

Psychological and social dysfunction resulting from these sleep disturbances are explained and discussed in detail. Health-related quality of life is a concept that reflects the changes in diverse ...

Japanese sleep an average of seven hours and 22 minutes a night, the shortest among 33 countries surveyed by the Organization for Economic Cooperation and Development (OECD) in 2021.