In the lateral position, the back should form a straight line from the neck vertebrae to the sacrum.
In side/trouser position the spinal column should remain in its natural bent form, from the neck to the sacrum, as in an upright position. Thigh bones and knees should sink a little deeper into the mattress so as not to cause excessive pressure on the lower back.
When sleeping on your back, the spine must retain its natural bent shape from the neck to the sacrum. It is important that the lower back is adequately supported.
In all lying positions, an orthopedically justified support is necessary. The location of the spinal column at night can in no case hinder the hormonal flows.
In addition, the vertebrae must be able to arrange themselves at night so that the intervertebral discs can regenerate optimally. At the same time, the neck and back muscles that are most of the time twisted in the daytime due to improper sitting position must be given a chance to relax.
But the human body is not a plank. Normally our shoulders are wider than our hips; but at the hips we have more weight than at the shoulders.
So it's clear that the ideal bed for a dominant sideswipe is softer at shoulder height and harder at hip height. Hard mattresses are a real disaster in terms of support, you really stretch yourself all the way up on such mattresses. In this light, no one will contradict that the saying that hard mattresses are good is a real fable.
Even in light people, the shoulders must descend sufficiently into the mattress so that the pillow does not have to carry the weight of the shoulders through the neck.
When using an orthopedic pillow on a bed that is too hard, you move the problem from the shoulders to the neck. The neck muscles become overloaded and the pressure on the head becomes excessively large. Especially for people with back pain, the mattress must enable the distance between the shoulder tip and the lower back to be impressed by the shoulder. This means that, regardless of the weight of the person, the mattress in the shoulder part can be pressed 6 to 9 cm., while at the hips, which usually weigh more, the body should not sink too much into the mattress. For people with low back pain or prolapse, it is important that no pressure is exerted on the lower intervertebral discs. Therefore, to offer a perfect linear support, the mattress must be highly elastic without being deformed. It should also have a softer shoulder zone and a slightly harder hip zone, as well as a softer knee zone if desired.
The substrate on which the mattress is located should provide the same support and impression, but in an accentuated way.
The ideal bed is as large as possible and allows you to stretch out both lengthwise and in width. It allows you to make yourself as big and as wide as you want without being hindered by a bedhead, a footbed or cohabitant. For side/stomach and stomach sleepers, the bed is at least 30 cm and preferably 50 cm longer than the person concerned! It must be possible to maximally stretch the spinal column and make the body yoke on the mattress. This ensures a perfect lateral support.