Is this for other countries in the far east too? Like China, Japan, Vietnam, etc.? Or just for South Korea?
I’ve only seen it here and at a very few places in Singapore. Very few. You would probably have to seek it out. It’s usually the “upper class” (expensive) gyms that do this. Never worked out or went in a gym on my trips to Vietnam, China, Cambodia, gyms in Japan are practically nonexistent.
They usually operate on a 24 hour standard where you have to have a key card for access. They don’t sell day or week passes.
Which to an extent, I can understand. Lots of people that work within the city come in from outside. They arrive early mornings, work long hours, have after work eats and soju with coworkers and then head home well past dark. Having a gym that supplies you gym clothes and amenities like free razors, combs, cologne, deodorant, pants presser, shirt straightener, sleep rooms, etc and be a huge convenience for people not walking to lug around a gym bag in the transit system.