The second day something can not sleep, the main reason is the following two aspects: 1, encountered the second day something such a stressful event, many people will have anxiety, nervousness, anxiety, nervousness is easy to cause difficulty sleeping, early awakening, nightmares and so on. Anxiety and nervousness can easily be accompanied by many emotional and behavioral problems, such as fear, dread, worry, apprehension; headache, dizziness, nausea, vomiting and even malaise; it may also be accompanied by behavioral manifestations, such as fidgeting and walking back and forth. This time will be accompanied by problems of attention and memory, as well as sleep. 2, because their character has certain defects, such as introversion, low self-esteem, easy to nervous, particularly sensitive and suspicious, while some people are particularly strong, the pursuit of perfection in everything, this time it is easy to encounter some things, too much tension, anxiety and even insomnia and other problems occur. These two reasons are more common.