* How it happens: Some Pokémon attacks inflict sleep on opponents, like Sleep Powder or Yawn.
* What it does: While asleep, a Pokémon cannot attack, and there's a chance it will wake up on its own turn.
* How to wake up: You can use a "Wake-Up Slap" or "Roar" move to force a sleeping Pokémon to wake up. You can also use items like Awakening or a Chesto Berry.
Important Note: You can't cure sleep on your own Pokémon. If your Pokémon falls asleep, you have to wait it out or use one of the wake-up methods listed above.