Abnormal posturing is different from bad posture or slouching.. Instead, it involves holding a body position, or moving one or more parts of the body in a certain way. Abnormal posturing may be a sign of certain injuries to the brain or spinal cord.
Follow @TIME. 1963 was a momentous year in America: President John F. Kennedy was assassinated, Martin Luther King Jr. delivered his âI Have a Dreamâ speech at the March on Washington and, somewhat less heralded by all but the most fervent postal historians, the ZIP code was introduced.
A ZIP code is a numbering system with separate code numbers for all cities in the United States. On April 30, 1963, Postmaster General John A. Gronouski announced that the ZIP Code would begin on July 1, 1963. The United States Post Office Department introduced the Zone Improvement Plan (ZIP) Code, a coding system that assigned codes on maps to all addresses in the country. In 1943 the United States Post Office Department divided cities into zones to assist in speeding sorting and mail delivery.