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.
Modafinil (Provigil) and armodafinil (Nuvigil) are possible medications to treat excessive sleepiness. These medications work by changing the action of certain chemicals in the brain, and have monoaminergic effects (altering neurotransmitters like dopamine and serotonin).