Asians develop many of their common home tasks kneeling down. The hip is positioned in such a way that makes a correct back position possible to be held with no struggle at all. With T, and thanks to its 15 degree inclination, the hip remains in the same position, giving the people who is not used to that position the chance to get close to it. On the other side, in the original position, the hip is lying on the feet, generating a constant move. This is called dynamic ergonomics, that enhances a position to be held for longer.