Sam Chien Be/ Sanzhanma/ Sanchin-dachi/ Three Battles stance

[yat_chum]

In the system of White Crane that I practice the Sam chien be (three battles horse) is the main fighting stance and looks very much like the following pictures.







Recently one of my work colleagues said to me that this stance is damaging to the kidneys as it disrupts the flow of chi. What does everyone think about this?

[vamos]

i tried the stance.i can feel the tightness round the kidneys so unless its a moving form i guess it would inhibit the flow.maybe there is a deeper meaning to the stance?