The Olympic feast is getting better and better. Just now, American swimming legend [flying fish] Phelps won the men’s 4x200m freestyle relay, which is also his 21st gold medal since all previous Olympics. However, at this time, the more comments we see on the Internet are not about the gold medal itself, but more about the red circle around Phelps, which is also known as [cupping]. Phelps is undergoing vacuum tank treatment. Not to be outdone, foreign media began to popularize science one after another, [Olympics in bright red spots: What is cupping? ] The famous CNN began to popularize science to nuts. Not only Phelps, we have seen more and more athletes (especially Olympic athletes) use cupping as a Read More …