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 is the home or the place where an animal lives. Environment is a terminology that comprises all living and non-living things that occur naturally on Earth or some part of it. an environment is the natural surrounding where any human species can adapt itself to..