The basic Tai Chi twist exercise is good for building core strength, and following the principles of Ding Shi during forms also helps to promote strength improvements. Ding Shi means holding each position in a form for several seconds, which develops good posture and balance.
Tai Chi promotes the correction of body alignment, relaxation and breathing techniques. As practitioners learn about the correct alignment of the joints in their bodies using the principles of Nei San He and Wai San He, they learn how to activate their cores and use the correct supporting muscles for each posture. Practicing the beginner forms with this in mind promotes core strength.