Do you play sports? Nowadays, many people play sports. These many people have a favorite sports team or Olympic player. However, in the Olympics, there is much controversy. This arguing is a certain rule, which is called Rule 40. The Olympic Charterś Rule 40 is a rule that limits athletes and other participants from appearing in advertisements and other marketing without permission from the International Olympic Committee, IOC. The participants are also forbidden from wearing clothes with logos of non-Olympic sponsors. Brands that sponsor the individual player and not the Olympic games are forbidden from referencing the Olympics by name or using Olympic logos in tweets or advertisements. Also, the athlete they sponsor is not allowed