😴 Sleeping Face: Represents being asleep or tired. Often used to indicate a late night, a nap, or just feeling exhausted.

💤 Zzz: Signifies snoring or sleeping. Commonly used to show a character is asleep in cartoons and comics, now a popular emoji for showing sleepiness.

🛌 Person in Bed: A more literal representation of sleeping, resting, or being sick in bed. Available in various skin tones.

🌙 Crescent Moon: Often associated with nighttime, sleep, and dreams. Used to wish someone goodnight or to symbolize the evening.

✨ Sparkles: Represents dreams or magical thoughts while sleeping. Can be used to symbolize a good dream or a peaceful night's rest.

🥱 Yawning Face: A clear sign of being sleepy, bored, or tired. Often used to convey the need for sleep or to express disinterest.

For Good Night Wishes: Use 😴, 💤, or 🌙 to wish friends and family a good night's sleep.

Expressing Tiredness: When you've had a long day, a 😴 or 🥱 emoji is perfect to show you're exhausted and ready for bed.

About Napping: A quick 🛌 or 💤 can let others know you're taking a short nap.

Describing a Dream: Use the ✨ emoji along with other symbols to describe a magical or special dream you had.

For Bedtime Routines: Combine 🛌 with 🌙 to talk about getting ready for bed or your nightly routine.

The 💤 "Zzz" emoji has its roots in comic books and cartoons, where "Zzz" is a universal symbol for a character who is sleeping and snoring. The 😴 "Sleeping Face" emoji was introduced as part of Unicode 6.0 in 2010, offering a more direct facial expression for sleepiness. As emoji usage grew, more nuanced emojis were added. The 🛌 "Person in Bed" was approved in 2016 (Unicode 9.0) to provide a more specific visual of resting, and the 🥱 "Yawning Face" joined the collection in 2018 (Unicode 11.0) to represent the prelude to sleep or boredom.

The "Zzz" emoji (💤) is one of the most recognizable emojis worldwide for sleep, transcending language barriers. The exact design of the 😴 emoji can vary significantly across platforms, from a peaceful expression to a more dazed, sleeping-on-the-spot look. The "Person in Bed" emoji (🛌) is gender-neutral by design, with various skin tone modifiers available to be more inclusive. The 🌙 (Crescent Moon) emoji is not just for sleep but also a popular symbol for Islam and nighttime activities in general.