ELI5: Explain Like I'm 5

Urination

Urination is when you pee or take a wee. When you drink liquids, like water or juice, your body takes what it needs for energy and sends the rest to your bladder. Your bladder is like a balloon that holds your pee until your body says it's time to empty it. When you feel like you have to pee, it's because your bladder is getting too full and your body is telling you to let some of that pee out. When you sit on the toilet or use a potty, your body relaxes a muscle called the sphincter that holds the pee in, and muscles in the bladder squeeze to push the pee out. After you're done peeing, you feel better and your bladder is ready to fill up with more pee again!