Once the recollection of the Buddha (buddhānusmṛti) attains skill, the body will be regulated and restored to health

Yonggang asked: During my nap today, I heard the four-character Buddha-name recitation continuing on its own, yet I was in a state between dreaming and waking; my vision was blurry, and though I wanted to open my eyes I could not. Yet I knew when my child was talking and leaving for school. This state lasted over an hour. After two o'clock I went out cycling around the streets, came back and did more than forty minutes of practice, then sat in meditation with single-leg crossing reciting the Buddha's name. Today I recited the six-character Buddha-name, a bit fast, with the voice slightly louder than usual. During the recitation I felt my whole body tingling, numb, and swollen, especially noticeable in the head, and at the same time my chin trembled noticeably. Since the second half of last year, I have been burping when reciting the Buddha's name; up to now, whenever I recite the Buddha's name or bow to the Buddha, the burping is very severe, but when I am not reciting I do not burp. Because Master said wearing the Śūraṅgama mantra wards off evil, I wore it during my nap. Please, Master, give me guidance and correction on what I should do next.  

Answer: Reciting the Buddha's name automatically in a half-asleep, half-awake state is the initial stage of manas reciting the Buddha's name, and there is some meditative concentration (samādhi) already. When reciting the Buddha's name in sitting meditation, feeling the whole body tingling and numb means the qi meridians are circulating throughout the body. If there is some dampness or something else in the body obstructing the smooth flow of the qi meridians, there will be a tingling, numb sensation; the qi meridians are also circulating in the head. Burping while reciting the Buddha's name and bowing to the Buddha is a phenomenon of the qi meridians passing through the stomach; when the qi meridians circulate, they push the cold-damp qi in the stomach upward, producing the burping phenomenon. If everything below the stomach is open, with no blockages, the cold-damp qi in the stomach will move downward and be expelled from below, and will not go upward causing burping. When the qi meridians move further up to the lungs, there may be a lot of nasal mucus; if there is no blockage below, the cold-damp qi will be expelled downward and there will be no nasal mucus.  

When there is meditative concentration, the qi meridians circulate and will automatically regulate the body, producing various phenomena; all of this is normal and a good sign. If you want to open up everything below the stomach, you need to breathe deeply, draw the qi down to the lower dantian, and then breathe with the dantian—that is, abdominal breathing. This way the body will open up more quickly. Once the qi meridians reach the lower dantian, the back and legs will open up quickly, the whole body will be in circulation, the meditative concentration will grow ever deeper, and the results of reciting the Buddha's name will get better and better. Poor meditative concentration is related to poor physical condition, so you should regulate your body as well and as quickly as possible. Search online and you will learn how to deal with these problems. The internet is so convenient—make use of it quickly.  

Wearing a handwritten Śūraṅgama mantra on the body also has a blessing effect; everyone can write one or two copies of the Śūraṅgama mantra themselves and wear it on the chest or upper body. Going forward, you can continue reciting the Buddha's name, cultivating the samādhi of recollection of the Buddha (buddhānusmṛti), or use the recitation to cultivate meditative concentration. Once the dharma principles for the elimination of self-view (ahaṃkāra-mamakāra-parityāga) are clear and your meditative concentration has deepened somewhat, then engage in contemplative practice (vipaśyanā-caryā) on the five aggregates (pañca-skandha), or cultivate the white bone contemplation, striving to eliminate self-view.