I did dedicate myself to those things for a while, but I had too many other interests that I wanted to pursue as well, so now I just do about an hour a day of either lifting, running, or martial arts.
I didn't care for SF4 though. Too slow, too stiff (compared to Alpha series, my favorite SF games) a lot of the characters were ugly as sin and didn't look near as good as their previous incarnations. That big hands/big feet thing does not translate well to 3D, and they did it again in SFV :(