_:vb6962270 . _:vb6962272 . _:vb6962272 "Irregular bedtimes may disrupt healthy brain development in young children, according to a study of intelligence and sleeping habits.\u00A0 \u00B6\u00A0Going to bed at a different time each night affected girls more than boys, but both fared worse on mental tasks than children who had a set bedtime, researchers found."@en . _:vb6962270 "An action performed on a regular basis."@en . _:vb6962271 "It\u2019s become a habit of mine to have a cup of coffee after dinner."@en . . _:vb6962271 . . "1" . . . _:vb6962272 "2013 July 19, Ian Sample, \u201CIrregular bedtimes may affect children's brains\u201D, in The Guardian Weekly, volume 189, number 6, page 34:"@en .