SPORTS IN FRANKFURT (Frankfurt)

Hello everyone! I'm moving to Frankfurt soon. I love swimming, running and bootcamp. I suppose it will be too cold to run and to do outdoor bootcamp. Does anyone know of a swimming pool I could go to? Or somewhere where I could do indoor bootcamp? I don't like gyms very much (just went for a month about 10 years ago!) but if there is no other way to keep fit, then I'll have to go to one. So if any of you know of a cheap and good one I would appreciate it. Thank you!!!