I purchased this game as I wanted a more serious workout than Wii Fit. Although it does provide that it is however unenjoyable. The fitness test at the beginning is very professional and provides an accurate take on your fitness (rather than the BMI that Wii Fit uses -which is useless for fitness). You are then allowed to tailor your fitness program to suit your wants. The exersises are basic gym exersises and like all animated people she does become annoying. You will also need a big room to do some of them in. The bonus of this game to any other fitness software I have used is that you can input other exersise that you do, so that you can accuratly measure your activity.
My biggest greivence with the game is that if you are a serious fitness person who enjoys and would regulary use this then you don't need it, however if you are useing it to slowly get you into a fitness regime then it can be very intimidating. I would prefer to invest in a gym class, although for the money (around 10 pounds) it is good value.