In the night to fall asleep is particularly difficult for the following reasons: first, with the brain overexcitation is related, such as drinking strong tea, strong coffee and other stimulating drinks before bedtime, resulting in the cerebral cortex center in a state of excitement to fall asleep will be particularly difficult. If the spirit of excessive tension, stress, anxiety and depression, that is, heavy heart will also lead to the problem of difficulty in falling asleep. Second, may be related to a poor lifestyle, such as often stay up late leading to biological clock disorders will cause difficulty sleeping, long-term sleep disorders will lead to patients in the daily work of brain function activities are affected, such as daytime performance of fatigue, weakness, memory loss, inattention, etc. It is recommended that timely adjustment, for sleep difficulties can be intermittent oral zolpidem tartrate.