Put away that Ab Roller and the Tony Little Gazelle machine that's hogging space in the living room. There's a new way to get in shape. At least that's what Nintendo wants you to think when it introduces Wii Fit to the U.S. later this year.

Trust us, this is harder than it looks. Click to see more images from the game...

Yesterday, we got our first "feet on" experience with the Wii, and even though Nintendo higher ups say this game isn't designed to help people lose weight, we say otherwise. Despite semi-regular workouts, 30 minutes with the Wii Fit left us both winded and embarrassed about our inferior level of fitness.

Wii Fit comes with over 40 exercises, all of which fit into four categories: balance, aerobics, yoga and strength training. We tried a sampling from each group (we totally pwned the Half-Moon yoga pose, thank you very much). While performing these exercises, the Balance Board, which comes packaged with the Wii Fit game, measured micromovements in our foot to see how still we kept during the exercise. The results? Usually some scribbly lines onscreen that -- depending on the exercise -- looked more rambunctious when our balance wasn't perfect.

We also tried out setting up our own profile by entering our birth date and height. Then the Balance Board measures your BMI. We scored 'Just Right.' Then, after a 30-second balance test, we got our 'Fitness Age,' and much like the Brain Age games, the lower the age, the better. We scored three years younger than our real age, which is considered 'good' as far as the game is concerned.

While it's pretty horrifying to have your Wii potentially tell you if you're overweight, it's hard not to be impressed by the Balance Board's ability to detect such small movements. We're curious to see how well the Board works on carpet – we used it on a hard surface – and we'd like to get a closer look at the goal-setting capabilities of the game. The game demoer says you can set a goal of, for example, "losing 10 pounds in a month" and the game will keep track of your progress.

There are other questions, too. Will the Balance Board work with more games down the road? Nintendo's not saying yet. In Japan, where Wii Fit has already sold 1.4 million copies, only one other game, Family Ski, uses the board. Look for these questions and more to be answered when Nintendo's get-fit game hits stores on May 19.