1. Increases the extensibility of collagen tissues

• If we heat the human tissue up to 45 degrees Celsius and then stretch ourselves, it could extend about 0,5 - 0,9%, which lasts after the end of stretching. Twenty visits could lead to extension of about 18%.

• This effect is very important for joints, ligaments, tendons, fascia and synovial tissues which can be damaged – it is very important to warm the tissue because the whole process is less demanding for the body at higher temperatures (i.e. 45 degrees Celsius).

• Application of infrared radiation together with stretching and warming provides greater extension than at the body temperature. This safe stretching is very important for professional athletes because it minimizes their recovery from injuries to a minimum.

2. Reduces the stiffness of the joints

• Medical studies show a reduction of up to 20% in joint stiffness during tissue warming to 45 degrees Celsius. It mainly concerns rheumatoid finger joints.

3. Reduces muscle spasm

• Using infrared heat leads to a reduction of muscle spasm, if it developed on the basis of skeletal, joint or neuropathological damage. This effect is obviously achieved by acting on the primary and secondary afferent nerves and Golgi corpuscle by spinal cord cells. The results of both of these mechanisms show that the maximum effect is possible in the precise therapeutic range of temperatures that can be achieved by infrared radiation.

4. Reduces pain

• Studies show that heat reduces sensitive pain threshold directly on free nerve endings or the peripheral nerves. A dental study provides examples of repeated application of heat, which eventually led to the total loss of the neural response to pain caused by tooth pulp. It is probably due to the fact that heat can lead to increased production of endorphins and closure of the spinal Melzack and Wall windlass - it is known that both of these affect pain reduction.

5. Increases blood flow

• Heating body parts results in a reflex-modulated vasodilatation in distant parts but still does not change the central body temperature. When the muscles are heated, blood flow is increased as if we were exercising.

• The temperature increase causes an increase in blood flow and direct dilation of capillaries, arterioles and venues. It is happening apparently by affecting their smooth muscle directly.

• Whole-body hyperthermia and subsequent higher temperature of the body's core further increase vasodilatation, despite a decrease in hypothalamic activity, which leads to a reduction in voltage at the arteriovenous anastomoses. Vasodilatation is also invoked by axonal reflexes which alter vasomotor balance.

6. Decays of inflammation, edema and effusions

• Increased peripheral blood flow causes the transport needed to reduce edema, which helps stop inflammation, reduces pain and speeds up the healing process.