Kids need to play and being outside is great, until it rains or snows, to cold whatever. Wii Fit has brought it to a whole new level with Vitality sensor. The add on sensor clips on to your finger and monitors your heart rate, this opens up a whole bunch of cool things that can be done. Doctors with permission can have children do Wii Fit games them upload vitals to the office for docs to evaluate. The ideas and apps are endless. Get the obese kids on the Wii start to develop games and add ons and lets see the obesity rate fall.