When we talk about our bodies, it seems that hip joints are rarely mentioned, and some common physical injuries are often unrelated to hip joints. We often hear that some people have bad knees, and their knees hurt after running for a long time. Many people always have low back pain and even lumbar disc herniation. But I've hardly heard of anyone who has a hip problem that affects sports or life.

In fact, the injury of knee and lumbar spine is often not the problem of knee or lumbar spine itself. The fundamental reason is that hip joint can't be used. The human body is a power chain, and the hip joint occupies a core position in this power chain. If you don't master the action mode of hip flexion and extension, the exercise pressure on the knee or lumbar spine is too large, and problems will occur over time. Therefore, learning hip flexion should be the first lesson for us to start exercise and fitness. Today, we will talk about this extremely important but always neglected action.