The posture of the sleep aid method can be very casual and the method is very simple. You can do it anywhere you want to sleep. 1. Exhale with your mouth; 2. Shut up, inhale through your nose and count 4 numbers in your mind (1, 2, 3, 4); 3. Stop inhaling, hold your breath and count 7 numbers in your mind (1, 2, 3, 4, 5, 6, 7); 4. Exhale with your mouth and count in your mind – 1, 2, 3, 4, 5, 6, 7, 8. Each of the four such “one breath” for once, need to repeat 3 times. Because of this breathing when the mind to count, so this method is 4-7-8 breathing method. According to the British “Daily Mail” reported, when inhaling to use the nose and do not make a sound, when exhaling with the mouth, to have “exhale” sound. And be sure to tongue against the palate. This method is very effective, the principle is to allow the lungs to breathe in more oxygen, more oxygen in the body can regulate the function of the human parasympathetic nervous system. The 4-7-8 breathing method regulates the function of the parasympathetic nervous system, so that people can think less about those things, so that they can sleep like a dream. This breathing method can relieve a person’s anxiety. It is recommended to practice the 4-7-8 breathing method twice a day for 6 to 8 weeks to become proficient in this method, and then you will be able to achieve the state of falling asleep in 60 seconds.