The Zhan Zhuang system works on the mind in two ways-, some of the exercises calm the mind; others aim to strengthen the power of the mind. You cannot accomplish the second without having achieved the first. Therefore, anyone starting Zhan Zhuang training must first work on calming the mind. Ultimately, you need to develop your mental control to the point where your mind can make your body relax precisely at the moment that your whole system is subjected to the greatest possible stress on it. This makes Zhan Zhuang one of the most personally demanding exercise systems ever developed. It requires an extraordinarily high level of synchronization between the mind and body.