title: Use it or lose it: activity may be the best treatment for aging.
authors.forename: Christine K
authors.initials: CK
authors.lastname: Cassel
mesh_terms: D000368:Aged; D000375:Aging / Q000502:physiology*; D003071:Cognition; D005853:Geriatrics; D006801:Humans; D007899:Leisure Activities; D011788:Quality of Life; D012106:Research