Infrared radiation is a convenient system to heat parts of our body. It has the advantage over direct contact in that radiation can heat directly the area where the blood capillaries and neuron terminals are. When heat comes from a direct contact source it has to heat the external layer of the skin, and heat is transferred to the deeper layer by conduction.
Infra Red Lamp/Heat Therapy - How does it work?
This can be used for your shoulders, waist, back, legs, abdomen or arms, to alleviate soreness, muscle spasms, aches, pains, cramps, period pains and sports injuries. The far infrared light relaxes tight muscles and increases blood flow, as well as aid in relief if you are experiencing conditions such as arthritis, rheumatism, neuralgia and menstrual cramps.