The hypocaust system. The hypocaust system (hypocaustum in Latin) was a heating system used in (wealthy) Roman homes and Roman baths, and the closest thing to central heating today. The hypocaust was a system that circulated hot air under the floor and surrounding walls. Hypocaust construction
CDC: Nearly 9 millon Americans use prescription sleep aids. Nearly 9 million U.S. adults take prescription sleep aids, with use more common among those who are older, female, white and better educated, according to the first government survey of its kind released on Thursday.
Some of the more popular prescription sleep medications include: 1  eszopiclone (Lunesta), which is a non-benzodiazepine sedative. 2  ramelteon (Rozerem), which is a melatonin receptor agonist. 3  trazodone (Desyrel), which is an antidepressant of the serotonin antagonist and reuptake inhibitor class.