INSIDE ZHAN ZHUANG 1a The Nuts and Bolts of Standing Meditation
video
Part 1a continues with the basic alignments and body mechanics, opening the midriff to stretch the spine, finding your center from the back, feeling the five points, the low Dan Tien and Mingmen, explanation of the Kua, the biggest "joint" in the body, connecting the lines of gravity - front, back outside and inside.