ELI5: Explain Like I'm 5

Protein shake

Protein shake is a drink that has special stuff inside called protein. Protein is something that helps your body grow big and strong, like how the plants need sunlight to grow. When you drink a protein shake, your body can use the protein to help build muscles and bones. It's kind of like drinking a special superhero juice that makes your body stronger. Some people like to drink protein shakes if they are trying to be extra healthy or if they need more protein in their diet. But remember, you should always talk to a grown-up before trying anything new like drinking a protein shake.
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