There are 80+ Anytime Fitness gyms in Osaka and it is growing. But many of them are outside of the main Osaka area and not in convenient locations for tourists. I have picked up the 3 most convenient Anytime Fitness gyms for tourists in Osaka. Anytime Fitness is purple icon and major train station is black icon in below maps.
1) Namba area is a very popular and convenient area in Osaka. This is a huge entertainment area, and the express train from Kansai Airport stops here. One of the most popular World Heritage-listed shrine in Japan, Koyasan is also accessible from Namba train station. In this area, there is Anytime Fitness Imamiyaebisu.
2) The area surrounding Umeda and Osaka stations is a bustling entertainment district with numerous shops and restaurants.Also, it is very convenient to move around with trains. In this area, there is Anytime Fitness Umedahigashi. It takes 12-15 min walk from Umeda station.
3) Shinsaibashi is a big entertainment area with many shops and restaurants. In this area, there is Anytime Fitness Nishiohashi. There are many hotels in this area.