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.
Zip Codes and the New United States Postal Service: 1963 - Today. 1963: ZIP Codes are introduced. ZIP Codes are five-digit numbers that enable mail to be sorted faster. Use of the code was not mandatory on any mail at first. 1967: The Post Office requires second-and third-class bulk mail to be pre sorted by ZIP Code.