Human: What is the difference between yoga and Tai Chi? Assistant: 
The primary difference between yoga and Tai Chi is in the approach to movement. Yoga is a practice based on physical postures and poses that focus on strength and flexibility, while Tai Chi is a practice that focuses on the coordination of breathing and body movements. Yoga can help to build physical strength, reduce stress and increase flexibility, whereas Tai Chi focuses more on improving the flow of energy throughout the body, often resulting in increased balance and overall health.