Forget Kinect Sports, Adventures etc - this is what Kinect is all about, this is what a person like me who finds the gym repetitive and boring wants in exercise. This is what people who haven't got the time/can't be bothered to go the gym, go for a jog or afford a treadmill in the house.
I got this yesterday, I was on it for a solid 2 hours last night and I was absolutely knackered - and I only burned off 300 odd calories! You can choose how you want to work out, be it cardio or toning etc. But also there are a few mini games to work off the fat such smashing blocks on the screen using boxing techniques.
For those that are skeptical to whether it will actually keep you fit/lose weight, rest assured you will be sweating by about 10 minutes. It doesn't just throw you into the thick of it however, it does allow you to ease yourself into each routine which gradually gets more strenuous as time passes. You can either set up a fitness regime with a "personal trainer" or if you don't want to be told what to do, you can simply pick any activity you want - it's that simple.
Another clever thing about this game is that Achievements are linked to burning off calories - so you will get an Achievement for burning off 100, 200 300, 600 calories etc.... so there's motivation there to gain them.
There is a section where you can use dumbells so it's worth buying a couple for this, and there is also a section for women who have recently given birth. This is a big bonus because currently my wife is pregnant and she said it'll come in handy post birth.
I highly recommend this for anyone who's like me who would love to work out and do some exercise, but hasn't got the motivation to plug in some earphones and jog on a treadmill or work on a cross trainer - because this isn't boring, it actually makes exercising fun and interesting and before you know it, an hour's exercise has passed and you feel great about yourself in mind and body.