Think of your body like a pitched tent.
The problem all of us have is, even from birth, our spine and body has had to make compensations for misalignments that the body could not self-correct. Typically this happens seemlessly in the first 20 years of life and for the most part, we will have been unaware of these minute tilts and twists the body has used to keep the whole body balanced over our feet. Speaking generally, this compensation begins to make itself known from our mid-20's onwards with aches, tension and the occasional muscle twinges and spasms as the muscles work hard to hold the skeleton upright against gravity.
How well balanced is your body over your feet?