First of all, harmonious music can mobilize people's emotions and promote blood circulation, which is widely used in square dance, yoga and aerobics. For those who help insomnia and anxiety, quiet and soft music can also relax and promote sleep.
Secondly, the physical application of light is very extensive. Now people pay attention to whitening, but ignore the positive effect of ultraviolet rays on human body. Some optical technologies have been applied to clinical medicine, and it is believed that they will also be applied to medical care in the near future. This requires certain research results as theoretical support. For example, will light be effective for people who often work three shifts?
Electricity can be applied to click massage. It can also promote blood circulation and help muscle exercise. Human nerve reflex is essentially bioelectrical reflex.