Ok....you got me. Basically almost everything costs money or on the case of women the show of money (fitness).
But I will say that one of the best things anyone can do is get in the best physical shape possible. That endeavor doesn't have to costs anything and it is very rewarding both physically and psychologically. I think that the classical Greeks had it figured out. They advocated both a healthy mind and body and indeed felt that one could not be fully developed without the other. I don't know where you are located but here in the States there are many groups both formal and informal that exists for mutual support and encouragement of physical fitness.
You can even start with walking and see how far up the vigor scale you can move.
Anyway, I don't think that life can be experienced to the fullest if one is in poor physical condition and this attitude should be a priority for any person.
Oh yes, I was referring to female companionship.

ANother thing that kind of goes along with the above idea is to take up cooking to both improve health and learn a new skill. There are literally millions of ways of preparing food and the variety is endless. Many ethnic dishes are fabulous and not as difficult as you may think.
Maybe even impress the chicks that way? Or cook for a group of friends? Maybe they get into it as well and also start training with you for a triathlon?
Never know.
Do something healthy though.