Most people follow a monophasic sleep pattern, meaning they sleep one time per day. Alternatively, many people sleep twice per day in a biphasic sleep pattern. People who sleep biphasically usually ...

Polyphasic sleep is a non-traditional sleep pattern where individuals divide their total rest into multiple shorter sleep periods or naps throughout a 24-hour day. This approach contrasts with ...

Official advice says that healthy adults require 7 to 9 hours of sleep every night for physical and mental health. Anything ...