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.
There are two main types of sleeping pills: over-the-counter and prescription medications. Over-the-counter sleeping pills are typically considered safe for occasional use.Most of these contain antihistamines to help induce a sleep feeling.n addition, keep these tips for safe use in mind: 1  Stop taking sleeping pills gradually. 2  Avoid forming a habit. 3  Avoid alcohol. 4  Donât try other activities. 5  Ask your doctor about conflicting health issues.