The smoother the handle, the better. On the contrary, the one with the protrusion is the best. Since ancient times, mobile phones have been used for health preservation. Long-term playing can stimulate acupuncture points on the hand, enhance the flexibility of fingers, develop intelligence and slow down Alzheimer's disease. The acupoints on the hand are the reflex areas of the internal organs of the body! Stimulated by the handle, it can work better and promote blood circulation. How to use it is that when you hold it, your hand hurts a little, but it feels a little comfortable and your blood speeds up a little. If your hands and feet are cold, you can feel your hands and feet warm after playing for a while, which proves the proper use!

However, there are also exquisite materials. For example, the formation conditions of crystal stone are harsh. To have rich mineral groundwater, it must be near the volcano and the temperature must not be lower than 50 degrees. If the temperature is not enough, it will not grow! Can't grow a crystal column! It takes tens of thousands of years! So there is a strong magnetic field! Magnetic fields are easy to understand. For example, if you put a nail on a magnet, it will be magnetic after a long time! So the crystal must be pure natural to have a magnetic field, and the artificial crystal has no magnetic field!

Crystal is a single crystal! The heat transfer speed is very fast. If you hold a crystal in your hand, the temperature on your hand will be quickly transferred to the crystal, and the exposed part of the crystal will quickly transfer heat to the air when it meets the air, so even if you hold it for a while, you still feel a little cold! Therefore, crystal objects are best used in summer! Wood walnuts are the best in winter! Hope to adopt! thank you ...