Wii Fit uses a unique platform peripheral called the Wii Balance Board that can measure a user's weight and their center of gravity, and calculate their body mass index based on the user's height.

Wii Fit allows you to install the Wii Fit Channel straight to the Wii Menu, which allows users to compare fitness results and perform a Body Test without inserting the game disc. The Wii Fit Channel will also let you know when your last body test was taken right on the Wii Menu.

The Body Test performs two functions. First it weighs you for your daily weigh in. Secondly, it calculates a Wii Fitness Age, which comprises of your weight, actual age, and performance on two balance minigames.

Activities

Training within Wii Fit is divided into four categories: Yoga, Strength Training, Aerobics, and Balance Games. These exercises will provide a "core workout", emphasizing slower, controlled motions. The activities include:

• Yoga
  • Half-Moon
  • Cobra
  • Bridge
  • Warrior
  • Tree
• Strength Training
  • Torso Twists
  • Rowing Squat
  • Lunge
  • Push-Up and Side Plank
  • Jackknife
• Aerobics
  • Hula Hoop
  • Basic Step
  • Basic Run
  • 2-P Run
  • Rhythm Boxing
• Balance Games
  • Soccer Heading
  • Ski Sloalom
  • Ski Jump
  • Tightrope Walk
  • Lotus Focus