The normal structure of the spine:

• spine has a wave shape (cervical lordosis, thoracic kyphosis, lumbar lordosis and kyphosis sacrococcygeal)
• curvature of the spine in the correct posture provide uniform pressure surfaces vertebral discs, with the disc is squeezed flat and does not seek to shift
• the motion vector of the spinal disc compressing force is changing, but once stabilized by the return to the center position with good posture
• In spite of the large number of component parts of the spine acts as a single body, it should be considered as a whole

Introduction to posturology

Osteochondrosis - a frequent diagnosis for all problems spine.

Term low back pain comes from the Greek osteon bone, cartilage + chóndros Latin - ōsis - disease.

Compression lesion, which causes a ischemic problem for the spinal root tissue and the tissues around it, compression of the spinal cord membranes, etc. is the leading link in spinal pathology.
The muscular defense of spastic muscular blocks was inherited from the animal world and is good only when walking on four limbs, when, after performing its function, it is developed by a wave-like movement of the spine in a step and trot. This movement is easy to see when watching the animals from above - their pelvic girdle and shoulder girdle work all the time in antiphase, which leads to repeated sinusoidal curvatures of the spine to the sides. This is their natural therapeutic gymnastics:

This movement was well felt by everyone who was involved in horse riding. In addition, when the spine is in a horizontal position, the force of gravity acts across it, and on us and all direct erects, this force acts vertically on compression. It remains for us to go down on all fours and fight compression ...
Therefore, it is necessary to constantly engage in the mobilization of the spine and have a technique for relieving the compression load on the spine.
Obligatory and the best tactic to date in all cases:

Vertebrology: Myths & Misconceptions