With hot summer coming, people tend to be uneasy, sweating, poor appetite, sleepy, in low spirits and poor sleep is more common.

　　As the temperature is high in summer, in life, It’s especially important to keep a good sleep. It’s necessary to develop a good habit of getting up early rather than going to bed late and take appropriate exercise to let the Yang out.

　　In summer, when the daytime is longer, it is even more important to have a good nap. The so-called "zi meridian sleep" refers to two periods of the midnight 11 to 1 o 'clock and noon 11 to 1 o 'clock,  during which time the human body should be in a state of sleep, because "zi" and "noon", is the replacement of Yin and Yang in nature. If the human body at these two time nodes  remains in a state of sleep, it’s conducive to the balance of Yin and Yang in the body. Half an hour nap can cultivate Yang Yin. If you rest before 11 o 'clock at night you can nourish Yin Yang.  A good Summer "zi siesta" sleep can keep vigorous spirit.

　　Hot weather often leads to poor sleep, so listening to soft music is especially helpful. Melodious and soothing melody is a benign stimulation to the human body, which can coordinate the normal activities of various organs and promote blood circulation, conducive to sleep.

　　Of course, the mood, diet conditioning is also very important, for example, in daily life we should maintain a peaceful state of mind, especially before falling asleep we should relax, rest,  rather than be too excited or thinking too much. We should avoid night drinking, drinking coffee or strong tea, eating raw and cold. Improper lifestyle caused by insomnia is quite common. Continuous bad sleep can pose a lot of problems, such as dim and dark skin, upset, even human immune function and endocrine metabolism dysfunction for light sufferers,  and for severe ones,  bad sleep can induce myocardial ischemia, high blood pressure, cerebral hemorrhage, and even bring about sudden death.