Ah, I resonate with this one a great deal. I've never been a big fan of gyms and never thought fitness should be a costly or a showy thing (as in having fancy matching outfits or whatever). And yay, what a joy you discovered yoga - really happy for you! It's incredible how far a short daily practice will take you, especially for back and posture. I'm happy for you and that you found a practice that you can stick to, since that's the most important (not forcing yourself to intense stretches or doing 1 hour a day or not at all) ;). It can all be tailored to you. Keep at it! :)