An impression of having seen or experienced something before: Old-timers watched the stock-market crash with a distinct sense of dÃ©jÃ  vu. b. Dull familiarity; monotony: the dÃ©jÃ  vu of the tabloid headlines.
Lateral Neck Flexion Stretch. Lateral neck flexion stretch targets the upper trapezius muscle. This stretch can be very useful for people who suffer from tight, aching muscles in the upper back and neck, such as those who work at a computer.his stretch can be very useful for people who suffer from tight, aching muscles in the upper back and neck, such as those who work at a computer.
Lateral flexion can refer to movement of the neck. Side bends -- a type of lateral flexion -- can help tone the oblique muscles on the sides of the stomach and lower back.Lateral flexion refers to a sideways movement of one or more sections of the spine. View slideshow of images above. Watch the Did-You-Know slideshow.his is because lateral flexion affects entire portions of the spine, not just two adjacent vertebrae. Side bending from the waist involves movement in both the thoracic and lumbar spine; laterally flexing the head requires the involvement of most of the cervical spine.