Infrared heating is very good. . . . I am also practicing yoga. When German scientist Herschel studied the solar spectrum with a prism, he found that far infrared rays in the range of 5.6- 15 micron were easily absorbed by human body, and there was no adverse reaction after absorption. According to biological research, far infrared rays with longer wavelength can penetrate into skin and subcutaneous tissue up to 4-5cm, and are absorbed by tissues and cells to generate vibration, activate cells, make cells breathe with oxygen, and accelerate metabolism in the body, which is closely related to human growth and health and plays a particularly important role. Therefore, scientists affectionately call the far infrared ray in this wavelength range "the light of life".