Usually sleep normally occasionally a night does not sleep, this situation is most of the reasons, first of all is that the day encountered some things, resulting in mental tension, excitement, sadness and other emotions, or the next day to do what important things, so that night can not sleep. Secondly, we should pay attention to that night, have eaten some easy to cause insomnia food, such as coffee, strong tea, chocolate, etc., these foods because they contain some substances that can stimulate the nervous system, eat is likely to cause insomnia. There is also another situation is to go to bed before strenuous exercise, eat too much, watch TV series, play cell phones, computer games too excited, this situation may also cause sleeplessness. For these cases of occasional insomnia, we should try to maintain a smooth mood, do not eat easy to excite the food at night, do not go to bed before strenuous exercise, do not eat too full before going to bed, you can drink a cup of hot milk, soak a hot foot and so on may help to improve sleep.