Electromyography is a big word that helps doctors look at how your muscles work.
Think about when you move your arm, like when you're playing with a toy or throwing a ball. Your brain sends a message to your arm telling it to move, and your muscles help you do that.
Electromyography uses special stickers called electrodes that are put on your skin over your muscles. These stickers are like little cameras that can take pictures of your muscles when they're moving, just like a real camera takes pictures of things you see.
When your muscles move, they make small electrical signals that can be picked up by the electrodes. The signals are like little messages that tell the doctor how your muscles are doing.
The doctor can use this information to see if your muscles are working the way they should or if there's something wrong with them.
And that's electromyography explained like you're 5!