Experts generally recommend seven to nine hours a night for healthy adults. Sleep scientists say new guidelines are needed to take into account an abundance of recent research in the field and to reflect that Americans are on average sleeping less than they did in the past.
Synonyms: inhabitation, domicile, habitation, home, dwelling, inhabitancy, abode, dwelling house. habitation. Abode, dwelling, and habitation are used with little difference of meaning to denote the place where one habitually lives; abode and habitation belong to the poetic or elevated style. Even dwelling is not used in familiar speech; a person says my house , my home , or more formally my residence ..
Definition of habitat. 1  1a : the place or environment where a plant or animal naturally or normally lives and growsb : the typical place of residence of a person or a group the arctic habitat of the Inuitc : a housing for a controlled physical environment in which people can live under surrounding inhospitable conditions (as under the sea)