Better Balance: Simple exercises to improve stability and prevent falls", a Special Health Report from Harvard Medical School states "Tai chi moves, which involve gradual shifts of weight from one foot to another combined with rotating the trunk and extending the limbs, offer a series of challenges to improve your balance."

I practice Tai Chi 30 years now since my university time in China around 1991! I created 18 Tai Chi video courses in 2020, interrupted by Covid19 lockdowns after going through all my collection and comparing with different Tai Chi styles systematically. Covid19 epidemic make more people realize how important the health. The demanding for sports video and personalized sport are increasing. I begin to write a dissertation about Tai Chi Fitness in 2021. This may became my Ph.D. dissertation. I will break the whole dissertation into small topics publish them one by one. Here is the first one for you.