Magnetic bracelet is harmless and beneficial to human body. There is nuclear magnetism in medical equipment, and the high magnetic field is more than 3T, which is harmless to human body. It is recognized that nuclear magnetic resonance is the safest of all medical equipment in radiology department. In other words, people are not afraid of magnetic fields, but even more afraid of rays. High magnetic field does have some negative effects on human body, but the content of magnets in the magnet bracelet is limited. The effect of root magnetic therapy is only the so-called psychological suggestion ability, and there is no very direct and obvious medical effect. The magnetic bracelet constantly stimulates the wrist microcirculation system through weak magnetic field lines, which has a very weak effect on promoting blood circulation, improving human physiological magnetic field and eliminating fatigue. It's really good for sleep, but it's not big.