... rays weaken with distance, so the closer to the source of the far infrared rays your body is, the more impact they will have ... such as asthma, sinusitis, allergies and bronchitis. 4) Very good for relieving paralysis, sciatica, insomnia, neuralgia, abnormal nerve functions, ... functions and relieves stress in body and mind. 15) Good response in treating scapula humeral periarthritis and lumbar muscle ...