title: On call. Ever since I retired last year, I've enjoyed taking an afternoon nap whenever it's convenient. My wife says napping will turn me into an old man. I can easily give up my naps if she is right--but is she?
authors.forename: Harvey B
authors.initials: HB
authors.lastname: Simon
mesh_terms: D006801:Humans; D012146:Rest; D012179:Retirement; D012890:Sleep