Nintendo Wii Fit U with Wii U Balance Board Wii Fit requires a Wii console to play. Wii console sold separately. Wii Fit combines fitness with fun and is designed for everyone, young and old. Wii Fit players work towards personal fitness goals and they block soccer balls, swivel hips to power hoop twirls, and go big on ski jumps to get themselves there. Check your daily progress, set goals, check your Wii Fit Age, and even enter exercise time you've done outside of Wii Fit. Wii Fit Age is measured by factoring the user's BMI reading, testing the user's center of gravity and conducting quick balance tests. Training is at the core of Wii Fit. You can spend as much (or as little) time as you want trying out all of the 40+ activities Wii Fit offers.