Tai Chi Secret why Hip Joint
Let's first discuss three key concepts. The first concept is: The hip joint is a flexible joint that can both fold and rotate left and right, while the knee joint is a fixed joint, capable only of folding but not rotating. Based on our daily habits, folding primarily using the hip joint is called sitting, while folding primarily using the knee joint is called squatting. In other words, sitting down involves folding the hip, and squatting involves folding the knee. The second concept is: When exercising muscle elasticity and strength, there are two approaches. One involves lifting weights such as dumbbells or barbells, which create muscle tension through contraction. However, this is not the type of tension we want. We are looking for tension created through the stretching and lengthening of muscles, the kind of tension that arises from extension. This involves pulling and lengthening the joints to create this tension.