You all missed the real reason. Holding the hands behind the back allows walking and standing with a slight hunch forward. This relieves the nerve compression of sciatica, a common ailment of older people, especially men. It is possible that many who do this don't even fully recognize why they do it, but just that it makes them feel better.
FLASH Application. Online Application for an Insurance License. The California Department of Insurance (CDI) requires California resident applicants to first pass the qualifying license examination prior to submitting their license application.
List of 296 Communities Permitting State-Approved Fireworks. Here is a list of the 296 communities in California that permit the sale and use of state-approved fireworks each 4th of July (updated as of 3/20/15): (* Indicates unincorporated areas) Southern California. Imperial County.