In this episode for upper-intermediate and advanced English learners, I’ll talk about vocabulary and idioms related to sleep. It’s a topic that can come in especially handy if you find yourself engaging in small talk, especially since so many of us are sleep-deprived. The idioms we’ll cover are: -hit the hay/hit the sack -to sleep like a rock/to sleep like a baby -out like a light -to catch some Zs -to sleep on it/to sleep on something (Music by Lesfm from Pixabay)