Twenty-four-hour gyms are proving popular not only in the cities but also in the suburbs, giving busy workers the option to squeeze in a bit of exercise during off hours.
These gym are popping up in greater numbers — fitted with training machines but without swimming pools or dance studios typical in traditional fitness centers.
Anytime Fitness opened the first 24-hour gym in Chofu, Tokyo, in 2010, and now boasts 234 branches located in 18 prefectures. Joyfit 24, also based in Tokyo, operates 160 outlets in 12 prefectures.