A the torso is straight, and the spine can be arranged in a normal standing position without overstretching; Squat posture, the body leans forward slightly, not perpendicular to the ground;

B the depth of squat requires that the upper surface of thigh is parallel or slightly lower than the horizontal plane;

C the knee joint can slightly exceed the toe, so it is not necessary to adhere to the century-old myth that "the knee joint is just a toe";

D hips stretch backwards, like sitting in a chair behind you;

Her eyes are straight.

Supplement: 1, the foot is slightly wider than the shoulder or the same width as the shoulder;

2, the two toes are naturally separated by about 30, and everyone's body structure is different, so how to walk is comfortable;

3. When squatting, the trajectory of the knee joint is consistent with the toe direction. To put it bluntly, where the toes point, the knee joint will top;

4, the center of gravity falls in the middle of the heel or foot (wearing high heels, the center of gravity falls on the heel; Wear flat shoes or barefoot, and the center of gravity falls on the feet);

5. Starting from the upright posture, the hips are slightly extended backwards, and the knee joint is unlocked at the same time, then the hips are bent, the knees are greatly bent, and the trunk is accompanied by rhythmic forward leaning;

6. The whole process of squatting and standing up should be as smooth as running water, and there should be no pause, jam, local acceleration, back and forth swing, etc.