Not American. BasicFit and similar chains allow you access to all their gyms across Europe. Obviously, the car will be a problem here. If you can afford it, something like the citroen berlingo will do. They’re everywhere, relatively affordable, and not super noticeable. If that’s not an option, there’s the library or public transport, combined with the occasional hostel. Not ideal, but better than sleeping on the street and not being able to wash at all.