There is no limit to waking up: is this the so-called "imbalance between yin and yang" of the body? From practice, it is very common to have one hand cold and one hand hot in piles, which can also be said to be a representative physical reaction of piles. Especially in the process of standing piles before the "spinal cord" is opened, there is often a physiological reaction that one hand is cold and the other hand is hot. Of course, its principle is still the principle of great meridian health preservation, that is, the traditional health preservation principle of "opening without pain, opening without pain", in other words, "opening without cold, not cold." Standing piles not only have cold and hot reactions in hands, but also in chest, back, upper body, lower limbs and other body parts. These physical reactions indicate that the meridians in the body are unobstructed and unbalanced, and the meridians are not completely connected. After standing for thousands of hours, when the body reaction enters the "spinal cord" stage, this body-cooling-heating reaction will not happen again.

In life, some people often have cold hands and hot hands because of the change of seasons, but most people don't have this knowledge and concept, or they don't take it seriously or pay attention to it when they feel it. From a certain point of view, the human hand is an information window, which can detect the patency, balance and microcirculation of the meridians in the body. For example, the patency, balance and microcirculation changes of human meridians can be reflected by the changes of "abortion" of nails, whether the temperature of palms is hot or cold all year round, and the changes of skin luster, brightness and ruddiness of palms.