Tai Chi may be an ideal activity for accommodating a wide variety of individuals with varying interests and physical skills while providing substantial health benefits. Theory suggests that children, adolescents, and healthy adults, as well as senior citizens and people debilitated by illness or injury, may benefit from the practice of Tai Chi movements. It has been practiced in China for centuries as a form of art, religious ritual relaxation, exercise, and self-defense. It is one of the few activities that improves with age and practice. Tai Chi may be performed passively (therapeutic) or dynamically (personal defense). There are generations of people who have performed Tai Chi daily and believe in the physical and mental benefits derived from the practice. Though it is not a high intensity exercise, it helps maintain and improve life energy and increase circulation, concentration, focus, and sense of well-being. When risk of injury and flexibility of performance are considered, Tai Chi is a viable alternative to aerobic exercises. The paper suggests its use in school physical education classes. Tai Chi's motions have a calming effect that can influence participants' attitudes. Research suggests that Tai Chi may yield many health benefits. Most noteworthy are findings indicating that participation results in more positive attitudes about exercise and improved mood. It appears that Tai Chi is a safe, beneficial exercise choice for people of all ages, with potential benefits far outweighing risks. (Contains 24 references.) (SM)