From this book you will learn about two famous doctors: Valentin Dikul and Nikolai Kasyan - about their life and work, and most importantly, about the principles by which they treat the most common diseases of our century - diseases of the spine. Sedentary lifestyle, unhealthy diet , poor ecology have a detrimental effect on the spine, and through it on the entire body. This book describes in detail Valentin Dikul's simulators and strength gymnastics for restoring the spine after injuries, the techniques and principles of manual therapy used by Dr. Nikolai Kasyan to treat osteochondrosis, spinal hernias, and joint diseases. Indications and contraindications for classes are given, and the advantages of each method are described. Renowned doctors also give advice and recommendations on how to care for the spine, what to do in case of acute pain, how to sit, stand, sleep, and lift weights correctly.