title: [Doubt about the value of summertime].
authors.affiliation: .
authors.lastname: Red
mesh_terms: D000223:Adaptation, Psychological; D000328:Adult; D001683:Biological Clocks; D021081:Chronobiology Disorders / Q000453:epidemiology / Q000523:psychology*; D003430:Cross-Sectional Studies; D005260:Female; D005858:Germany; D006801:Humans; D008297:Male; D008875:Middle Aged; D012621:Seasons