Your lower back is like the bridge between your upper body and your legs! It's made of strong bones called vertebrae that stack on top of each other, and in between them are squishy cushions that help your back bend and twist. Muscles all around your back hold everything together and help you move.

Example

1. My grandma has a cane, because she has a pain in her lower back.
2. I hurt my lower back lifting those heavy books.
3. Stretch your lower back to avoid getting stiff.