Loss of an upright Physiological Efficient Posture can adversely affect all the systems of the body. The cardiovascular, digestive, endocrine, energetic, excretory, fascial, immune, integumentary, lymphatic, muscular, nervous, respiratory, reproductive, skeletal and urinary systems have all been shown to improve when an upright Physiological Efficient Posture is restored.
More importantly loss of the Physiological Efficient Posture moves people away from Homťostasis and further into Allostasis. An upright Physiological Efficient Posture is one where all the parts of the body are correctly aligned with respect to each other and when the whole of the body is correctly aligned to the gravitational field.
The Primary Alignment is the relationship between the body's Centre of Gravity and its Counterweight.