ABSTRACT

The combined action of physical, physiological, and psychological conditions affects the mental and physical quality of our sleep. When looking in more detail at physical aspects, the spine — one of the most vital and vulnerable organs of the human body — will be protected consciously and unconsciously, e.g. by optimizing body posture. While seated — as for most awake activities — this will happen in an active way. During sleep, however, it is the sleeping system (i.e. mattress base pillow) that mainly determines body posture.