Does the health care patch really have an effect on some parts of the pain?

I often use it to keep my baby warm, which is not harmful to my health. Usually when you go out, you will stick two pieces on your knee. As long as the knees are warm, other places will be warm. People who often ride bicycles can also use it. The cold wind is very strong in winter. When riding a bicycle, put a piece on your knee to keep warm and effectively prevent rheumatism and relieve pain! ! I often use Babe Bear's, which has high fever temperature, long duration and rapid temperature rise. As thin as paper, it feels comfortable and does not fall off.