Thinking of getting the Wii Fit for Christmas? Better get started shopping - Wii Fit is flying off the shelves, according to Wal-Mart. The Wii console is still the biggest selling gaming console, and the Wii Fit package is incredibly popular.

With the Wii Fit already in high demand, it's promising to result in the same kind of scarcity and shortages that Wii Console buyers found last year during the holidays. The best thing to do to find the system you want is to search online. Right now, we're finding great deals with the big retail sites many of which have Wii Fit at a discount, and also find Wii Fit online on big online auction sites where you can negotiate for the best price, as well as find a lot more units available.

The demand is high though and retailers are already expecting that there will be times this is not available in stores while new shipments come in. If you are buying the Wii Fit, it's a good idea to check online prices, and order yours now, to avoid being unable to get one in time for Christmas.

The Fit includes a balance board as well as other accessories to help you build strength, balance and stamina. There are four areas you can work out in: Yoga, Aerobics, Strength Training and Balance Games. You can also measure your BMI, set goals, and measure your progress as you work out.

* Wii Fit includes more than 40 types of training activities designed to appeal to all members of a household.
* Wii Fit Age - The Wii Fit Age is measured by factoring the user's BMI reading, testing the user's center of gravity and conducting quick balance tests
* Lean to block soccer balls, swivel hips to power hoop twirls or balance to hold the perfect yoga pose. As you stand on the Wii Balance Board, included with Wii Fit, your body's overall balance is tied to the game in a way you've never experienced before
* Wii Fit also uses the Wii Balance Board for daily tests. These evaluate two key measures that a household can track via progress charts -
* Body Mass Index (BMI) - A weight evaluation based on a ratio of weight to height

Wii Fit comes in a variety of combinations with accessories and also as a Wii Fit bundle which includes the Wii Console.

Considering that big retailers both online and off are already limiting purchases as well as warning of delays in shipments, if you want the Wii Fit under your tree this Christmas, it's best to shop online now to make sure you avoid disappointment.