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Caloric intake during the ad libitum feeding period under normal sleep (black bars) and sleep restriction (red bars). (A) Total caloric intake, (B) carbohydrate intake, (C) fat intake, (D) protein intake. The ad libitum feeding opportunity included buffet meals (lunch buffet served at 1500h and dinner buffet served at 1930h) and unlimited access to a snack bar between the two buffet meals. Data are shown as mean ± SEM.
