Saw this one coming.
http://www.toningshoesinjury.com/?gclid=CMvcq_rfvKkCFYZ75Qoda2Bafw
"However, a study conducted by exercise scientists has found no evidence that toning shoes provide any significant benefit over traditional athletic shoes. In fact, knowledgeable medical experts advise that toning shoes actually pose major risks. Indeed, it is well recognized in the orthopedic community that anything that impacts your gait may cause harm to your bones, muscles and joints. Regrettably, the toning shoe manufacturers ignored this literature and failed to conduct adequate safety studies to demonstrate that wearing these shoes is safe."
http://www.toningshoesinjury.com/?gclid=CMvcq_rfvKkCFYZ75Qoda2Bafw
"However, a study conducted by exercise scientists has found no evidence that toning shoes provide any significant benefit over traditional athletic shoes. In fact, knowledgeable medical experts advise that toning shoes actually pose major risks. Indeed, it is well recognized in the orthopedic community that anything that impacts your gait may cause harm to your bones, muscles and joints. Regrettably, the toning shoe manufacturers ignored this literature and failed to conduct adequate safety studies to demonstrate that wearing these shoes is safe."