Far Infrared Rays (FIR), a part of natural sunlight having the longest wavelength, cannot be seen with the naked eye. When we bask in the sun, the sunlight activates every cell in the human body.Since ancient times, people have believed that appropriate exposure to sunshine can maintain and even enhance health.
However, long exposure to the sun has a negative impact on the skin. This fact is undeniable. Excessive sunlight can lead to freckles or other skin changes, some of which can be detrimental. Although FIR cannot be seen with the naked eye, it has the ability to penetrate refract, radiate and reflect. The human body can absorb FIR because of FIR's deep penetrating ability.
All matter is made up of uniquely-arranged atoms and molecules and the molecules are all moving in unison. Molecules are composed of atoms. There is a continuous cyclical vibraiton among and between those atoms. When molecules are illuminated with electromagnetic radiation of the same intrinsic vibration frequency as the substance itself, the electromagnetic wave energy is absorbed and the amplitude of that substance's molecular vibration is increased.
The increased vibration produces heat through friction. Many organic molecules have the same intrinsic vibration frequency as FIR. That's why when FIR, having the same vibration frequency, illuminates a substance, that substance will filter out the FIR and experience a "resonance absorption." This is a process known as "resonance-absorption to heat-generation" with the aid of FIR.
In other words, the vibration of atoms and molecules will generate heat and result in resonance absorption. In skin, the result will be elevated dermis temperature, expanded blood capillaries, and stimulated blood circulation. Metabolic disturbances, such as extravasated blood (bruising) will be scavenged, cell tissues are activated and production of enzymes is enhanced. Wastes from the aging process, the result of the natural process of metabolism, and detrimental aqueous substances will be eliminated through the sweat glands.
The warming effect of FIR can stimulate metabolism and blood circulation. It can also promote the elimination of such things as poisons, carcinogenic heavy metals; toxic substances from food processing; lactic acid, free fatty acids, and subcutaneous fat associated with aging and fatigue; excess sodium associated with hypertension; and uric acid which causes pain. Furthermore, if sebaceous glands are activated, accumulated cosmetics in pores can be eliminated through the skin rather than by the kidneys. FIR is helpful in this respect.
When we feel hot, we will instinctively seek shade. When we feel cold, we seek the warmth of sunshine. No one teaches us these responses. We have an innate desire for a comfortable temperature. Comfortable temperatures are actually synonymous with a comfortable energy frequency or "wavelength." That wavelength happens to be 8 to 14 microns - the same as FIR.
The seventy-five percent of our bodies composed of water, protein, fat and other substances - all must function properly to sustain life. When living things absorb FIR of 8 to 14 micron wavelength, they experience resonance absorption. The vibrating movement of molecules in living tissue produces an increase in heat energy which in turn activates cells and enhances metabolism.
FIR has three properties: radiation, deep penetration, and resonance absorption. Let's look at the relationship between these three properties and living things.
First, radiation: it means it can directly reach human bodies just like light does. For example, sunlight, which is also radiation, reaches earth through the vastness of space.
Second, deep penetration: FIR can reach well into subcutaneous layers of the body with its deep penetration ability, generating internal warmth suitable for molecule activation in living tissue.
The third feature is resonance absorption: Once illuminated, there is intrinsic vibration of body components - water, protein, fat, enzymes. And, the interior of molecules - atoms and atomic structures - experience the resonance absorption of FIR of their same frequency. This elevation of molecular energy is known as "resonance and absorption."
In summary, FIR not only makes the human body warm, but also can activate bodily functions. In other words, it will enhance and energize both your physical and spiritual states.
*Substances harmful to the human body are excreted by the above-mentioned functions through sweat and oil glands, such as carcinogenic heavy metals, toxic substances from food processing, lactic acid, nonesterified fatty acids, fat and subcutaneous fat which cause fatigue and aging, as well as hypertension caused by Na ions which trigger uric acid pain. (Source: "Far Infrared Ray - Hopes For Cancer")