Buy fake hydrogen-rich water cups. Most cheap hydrogen cups on the market use carrier electrolysis, and two pieces of stainless steel are directly used as the front and back sides. This kind of products are not completely anodized for many times, which can not continue to produce hydrogen, pollute water sources and bring risks to human health. The biggest feature of this cup is that the bubbles are smoky, similar to milk. Because electrolysis efficiency is low, large bubbles will be produced. Bubbles are white, and some have unpleasant smells. The hydrogen concentration of this kind of cup is usually very low. So it will bring harm to the body. HydrogenWater is a direct use of the original name of Japan. Because "water element" means "hydrogen" in Japanese, some people call it "hydrogen water", which is also called hydrogen-rich water in China. The research on hydrogen-rich water began with the first paper on hydrogen biology in Nature Medicine in 2007. Common sense tells us that hydrogen is insoluble in water. In the chemical experiment of preparing hydrogen in middle school, we use drainage method to collect hydrogen, mainly because hydrogen is insoluble in water. In fact, hydrogen is not insoluble in water, but its solubility is really low.