The pelvis is the center of our being. It is both spiritually and physically the most powerful part of the body.
The sacrum is the center bone in the back of the pelvis. The sacrum ideally floats at the base of the spine. This enables the natural life force energy in the body to move throughout the entire spine while in addition to allowing the natural swinging action from side to side as we move. However, due to sitting too much, musculature imbalances, scar tissue, one-sided sports, or trauma the sacrum can get congested and stuck in a fixed position.