... . Reduce the symptom of rheum. At the beginning of catching a cold, switching on 5 minute, use this product to rub the ... arthritis, neck ache, foot ache, and other aches, numbness, blood cold. Switching on 5 minute, use this product to rub the ... the thews for 10~30 minute.8. preventing chilblain of cold. Before 1~2 monthes of winter, switching on this product ...