Cheap fitness gym near Eppendorf - Hamburg

I am a student currently doing an Internship and I really want to join a gym to get fit and healthy! I have had a look on google but all the gyms are quite expensive. I was just wondering if anyone knew of any cheaper gyms that were close to Eppendorf or even just in Hamburg.

Any help would be great, thanks!!

Type "mcfit hamburg" in google maps and select the nearest one to your place.

mcfit costs around 17€ per month.

Uni seems to have 3 fitness studios: one in Rotherbaum, one in Harburg and one at Berliner Tor. I've just received some leaflets from them (I work at Uni) and it seems that their prices start from 15 euro per month for students and staff (Good Morning tariff: workdays until 10am/11am).

You can have a look at their web http://hsp-hh.sport.uni-hamburg.de/sportangstudios.htm