For this question, we defer to our center's founder Tricia Yu, on her website taichihealth.com:
Tai Chi (AKA Tai Chi Ch’uan, Taiji or “Taijiquan) is a slow, graceful exercise that promotes calm mental focus and alignment while building leg strength, endurance and stability. Ideal for increasing stamina, flexibility and coordination, Tai Chi promotes efficiency of movement and economy of effort. Tai Chi is a form of Qi Qong, or energy cultivation for healthy body, mind and spirit. You can apply it to everything you do, including how you interact with others.
