Choose the correct meaning: Hit the sack

"Hit the sack" is an informal and common English idiom that means to go to bed or go to sleep. The phrase likely originated from the days when beds were often sacks filled with straw or other materials. When someone was ready to sleep, they would literally "hit the sack" to settle the filling before lying down. Over time, this literal action evolved into a metaphorical expression for retiring for the night. It's a casual way to announce one's intention to sleep, often used after a long day or when feeling tired. For example, after a strenuous day of work, one might say, "I'm exhausted; I'm going to hit the sack." This idiom is widely understood and used in everyday conversation, making it a straightforward and relatable expression for ending the day and getting some rest. Thus, "go to bed" is the precise meaning.