When they sense a large amount of sugar in the blood, they turn off, making us feel sleepy. Those cells, called orexin neurons, are located deep inside the brain in the hypothalamus. Recent studies suggest the sugar and other carbs in food directly affect a specific group of brain cells that play a key role in keeping us awake. There may be an even sharper connection between what we eat and how alert we feel. As a result, eating too much of them in one sitting can make us feel tired because our bodies must work harder to break them down. Unlike carbs, which make our blood-sugar levels erratic, fats digest very slowly. It often indicates a user profile.Įating too much fatty food can slow us down too. Account icon An icon in the shape of a person's head and shoulders.
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