I wanted to state that at the very beginning. What yourself fitness actually is lies somewhere between a customizable workout tape and a digital personal trainer in a box.
The graphics are excellent in yourself fitness, with the environments bordering on serene. Your "instructor" is a female computer generated model who is pleasing to the eyes, but doesn't suffer from Lara Croft Proportion syndrome.
One of my favorite locales is an asian-looking "dojo" that obviously was inspired by the Matrix ("Whoa - I know Judo!"). I thought this when I first saw it and then later, the instructor said something to that effect without mentioning any names... too funny.
As for the sound, the music is nice and you have some selection, from jazzy pieces to techno pieces. Some of the locations and music are unlockable - and you unlock them by showing some dedication to your workouts. This is a nice touch, as it gives you something to work towards.
I was somewhat surprised that yourself fitness took itself so seriously. I think back to BMX XXX and even Tomb Raider and the interesting camera angles you can get on the female models; yourself fitness offers no such juvenile hi-jinks. In the yoga relaxation mode, you can move the camera anywhere you like to better view the movements in the training mode, but when you go into training mode, the graphics drop to a stick figure representation - and you have to be fairly depraved to get kicks out of risque camera angles on that.