By Stephen Wade AP Sports Writer RIO DE JANEIRO (AP) — Tokyo Governor Yuriko Koike is preparing for a strenuous workout with the next Summer Olympics headed her way. The practice started when she received the Olympic flag Sunday in the official handover ceremony from her Rio counterpart, Mayor Eduardo Paes. “I hope the flag is not too heavy,” she joked the day before. “Although I have trained my muscles to receive it properly.” The next three Olympics are in Asian countries that have already held games: Tokyo’s Summer Games in 2020, sandwiched between Winter Olympics in Pyeongchang, South Korea, in 2018 and in Beijing in 2022. This will come as a relief to the International Olympic Committee after two trying games in Sochi, Russia, and