Various causes of insomnia, there is an intermediate link, that is, tension, why people want to sleep, why can produce sleep, the mechanism is not yet completely is elucidated, but one thing is certain, that is, sleep can restore physical strength and energy, how long people actually sleep appropriate, it is difficult to have a unified standard, in general, can have about 6 hours of good sleep can be, if the occasional insomnia and does not If the occasional insomnia does not affect the efficiency of the next day’s mental activities, then it means that sleep at night is possible, the heart of the excessive mind, easy to cause internal tension, so that insomnia normalized, your concept and understanding of sleep needs to be adjusted, sleep is actually a need of the organism, rather than a task you want to complete yourself.