As long as you keep practicing, it will be effective. This action is often said in modern times, flat support, practicing waist and abdomen strength. When you use your feet and hands as support, your body will be suspended. The torso of your body is like a pillar of the house. Column is a very important load-bearing component. You can practice to areas above the shoulder and hip joints, including the pelvis. It is a whole composed of waist, pelvis and hip joint, and contains 29 muscles.