The Alter G Treadmill uses NASA technology to leave less weight on your feet so you can walk or run with less impact, less pain and better movement patterns. It has been shown to work well following ankle sprains, knee injuries and lower body surgeries. If you have an injury that is preventing you from training for a marathon, this can allow you to keep up the hard work with less impact. It also can help with neurological diseases that impact walking like Parkinson’s disease and Multiple Sclerosis.