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 ..
habitat. n. 1. (Biology) the environment in which an animal or plant normally lives or grows. 2. (Sociology) the place in which a person, group, class, etc, is normally found.[C18: from Latin: it inhabits, from habitÄre to dwell, from habÄre to have].. 1. a. The natural environment in which a species or group of species lives: good coyote habitat; managing wildlife habitat. b. A particular kind of natural environment: woodland and prairie habitats.