Getting people to stop tucking their pelvis under seems to be my life’s work. I don’t know how it happened but here I am. For one, I don’t think most people realize that they tuck their pelvis under every minute of their lives. For another, oh so many people are told to do so. Look at the picture above to see a very tucked under pelvis. Do you do that?
In the above image the right pelvis is tucked under and as a result the bones of the leg are pushed forward and no longer lined up directly under the spine. The image on the left is my idea of a properly aligned pelvis that allows for successful weight transfer from the spine to the legs. When the pelvis is tucked under the curve of the lumbar spine, essential to upright standing, is diminished. This is one of the main reasons that people have been told to tuck under- to relieve undue stress on the lower back.
Try to check in a number of times during the day to feel if you go through life tucking your pelvis under. You might not even realize that you are doing it as much as you are.