Completing an action requires not only strength, but also balance and flexibility.

The ideal sitting position for the first sitting position is the hip landing. If you lean back too much, it is easy to knock on the coccyx, which requires a certain balance ability and may be uncomfortable.

The sixth form is similar to the second form, except that one is lying flat and the other is suspended, and the grip becomes a short board, which may limit the number of times you can complete the action. To train the grasping ability, please refer to the suspended course of Prisoner Fitness Forum: /forum-5 1- 1.html.

Third, the form of movement changes, and the legs tend to straighten, which leads to the improvement of the flexibility of the back chain of the body. The reason why I feel more laborious than the sixth formula may be precisely because the flexibility of the back chain of the body is not good enough. To exercise the flexibility of the back side, you can refer to the right-angle support course of the Prisoner's Fitness Forum: /forum-58- 1.html or the downward dog posture in yoga.

Go back to the problem itself and escalate it gradually. Not only can you exercise your waist and abdomen strength, but also the flexibility and grip strength of your back can be gradually strengthened in this process. But that doesn't mean you can't overcome your shortcomings with some special training.