2. Face the wall with your back and lean forward with your hands.
3. Stretch your legs to both sides, with your heels against the wall and your hips against the wall.
When your legs reach the maximum extension, try to keep your upper body straight and hold your hands on the ground, that is, put your back close to the wall, accompanied by a downward trembling movement. This avoids the shortcoming of "deformation" of the cross.
There are many self-learners who make their hips not in a straight line when doing cross exercises, forming a situation of "one hip in front and one hip in the back".
This kind of mistake can be avoided by practicing the above methods, so that the hips will not go out of shape.