There are different styles of tai chi, each has a unique set of methods and principles, lineage, and date of origin. Some of these forms of tai chi lean towards health, while others stress competition or self-defense.

• Chen-style, which started between 1580 and 1660
• Yang-style, which started between 1799 and 1872
• Wu- or Wu (Hao)-style, which started between 1812 and 1880
• Wu-style, which started between 1870 and 1942
• Sun-style, which started between 1861 and 1932

• Fall reduction: tai chi helps to prevent trips and falls in the elderly. It also reduced the fear of falling among them and increased balance and posture.
• Chronic pain: tai chi significantly impacts the chronic pain experienced with specific conditions, such as osteoarthritis of the knee and fibromyalgia. There is also evidence it decreases joint stiffness.
• Chronic heart failure: tai chi was shown to improve maximum oxygen capacity in people who had heart attacks. And, although the evidence is inconclusive, tai chi seems to benefit areas of cardiovascular health, such as blood pressure and heart rate.
• Mental health and cognitive function: There is strong evidence showing beneficial effects on cognitive function. And, although scientific evidence is inconclusive, tai chi is associated with mindfulness and psychological well-being.