It depends on what brand of Hong Kong Neverland I am wearing. No cold or constipation after wearing it. All the problems are improving. If you don't want to wear it at first, wear it as clothes. People say we don't know. It's expensive to buy and try, and it really works, which is generally recognized by people who have worn it. There's nothing to lie about. He is a company protected by the state. Medical care is ok. I haven't tried other brands. I just wore this one and I'm still using it.