In an effort to be more environment friendly, organizers of this summer’s Tokyo Olympics have built cardboard beds for the athletes to sleep on. Some observers have questioned whether such beds will be strong enough to hold some of the heavier Olympic competitors. But Takashi Kitajima, who is in charge of the athletes’ housing for the event, told The Associated Press he is not worried about any beds breaking. “Those beds can stand up to 200 kilograms,” he said. Kitajima added that the cardboard beds were made to be even stronger than wooden beds. However, he did say there could be a problem if some athletes get too excited celebrating their gold-medal success. “Of course, wood and cardboard would each break if you jumped on them,” Kitajima said. The Athletes Village housing center is expected to be completed in June. The Olympics are set to open in Tokyo on July 24.