Hit The Sack File

: While the term existed earlier, it surged in popularity during World War II. Soldiers frequently used "sack" as slang for their sleeping bags.

: In the late 19th and early 20th centuries, mattresses were often just large cloth sacks stuffed with hay or straw. "Hitting the sack" was a literal description of laying down on these improvised beds. Hit the Sack

"Hit the sack" is a popular informal idiom that means . It is often used when someone is feeling particularly exhausted after a long day. Origin and History : While the term existed earlier, it surged

The phrase has roots in both historical bedding practices and military slang: : While the term existed earlier