Sleepy, but sleepless. What's going on?

Sleepy but unable to sleep, considering several reasons. There may be symptoms caused by neurasthenia, may be in normal life in the work of the brain for a long time, so that the nerve is in a highly excited state, difficult to adjust over, although the body brain has been in a tired state, but the brain cells are still in an excited state, it may cause want to sleep, but unable to sleep. In this case, we should do some appropriate relaxation, the common way is to soak in a hot bath, or listen to some light music; there is to improve the living environment, so that the living environment is more relaxed and comfortable, suitable for sleep; in ordinary life, we should pay attention to the regulation of life, do not let brain cells, brain nerves in a long-term nervous excited state, to work, but also to relax properly.