The moving air creates a natural instability and forces your muscles to adapt to the air volume within the pods.

In the eighties, Reebok revolutionized athletic footwear and contributed to an unprecedented exercise craze, introducing training shoes made of glove-soft lambskin, light and flexible for dancing, stretching, and graceful movement. Every woman on earth either owned a pair of Reebok trainers http://www.reebokzigtechclassic.com/242 or was saving up to buy a pair. Best of all, although they were soft as a baby's skin, Reebok trainers wore like they were made of stainless steel. Lots of well-loved and well-travelled Reeboks must have logged more than a million miles.
Now, capitalizing on breakthroughs in ergonomics, exercise physiology, and composite technology, Reebok footwear http://www.reebokzigtechclassic.com/44 has launched another revolution in training shoes. In fact, athletes, coaches, and trainers credit Reebok with the biggest breakthrough since Nike developed the "waffle" sole in 1973. The new line of Reebok trainers maximizes the benefits of running, walking, and dancing, building and toning muscles while minimizing impact-injuries.
Reebok engineers http://www.reebokzigtechclassic.com/4a and orthopaedists have developed new Easytone, Runtone, and Zigtech trainers with extra cushioning and balance pods in the soles. Reebok says, "Air travels between the forefoot and heel pod, creating super soft cushioning. The moving air creates a natural instability and forces your muscles to adapt to the air volume within the pods." In other words, Easytone trainers create slight instability as you walk or jog, activating your leg muscles and glutes for more toning. Runtone trainers similarly trigger activation in calves and quads, building and toning muscles while reducing overall body stress. And Zigtech trainers have specially designed soles to propel your forward motion, making it easier to train longer with less stress.