Are You a Sleepy Monster? by Guilherme Karsten is a charming children's book designed to help little ones wind down at bedtime. The story follows a lovable monster who is feeling tired and ready for sleep but needs help figuring out how to get cozy and rest. Through fun rhyming text and colorful illustrations, the book encourages children to recognize their own sleepiness and offers gentle prompts to help them prepare for bed. It's a playful and soothing story that aims to make bedtime a positive and comforting experience for young readers.