So, imagine your body is like a car. Just like how a car needs gas to drive, your body needs hormones to work properly. Hormones are like little messengers that communicate to your different body parts and make sure everything works together.
Now, sometimes these hormones can become a little extra excited and start sending too many messages. This is what we call "hyperfunction". It's like if your car was going too fast and you couldn't slow it down.
When your body is in a state of hyperfunction, things can start to go wrong. For example, if your thyroid gland (which makes hormones that control metabolism) is hyperfunctioning, you might start to lose weight without trying, feel shaky or anxious, and have trouble sleeping.
But don't worry, just like how you can slow down a car by pressing on the brake, there are ways to treat hyperfunction in the body. Doctors can give you medicine or other treatments to help regulate the hormones and get everything back to working properly.