1. The abdominal force method for abdomen is as follows: First, relax your head and grab the feet of the yoga mat with both hands. When abdomen is closed, you need to pull up the fitness mat, then keep your waist on the ground and your hips slightly raised. During the whole process, your neck needs to be relaxed.

The abdomen is the part of the body between the pelvis and the chest. Anatomically speaking, the abdomen refers to the part from the diaphragm at the bottom of the chest to the pelvis. The upper edge of the abdomen is the lower edge of the rib formed by the connection of pseudocostal cartilage, and the lower edge is the Poupart ligament of the anterior iliac spine.

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