Physical restraints are things that can hold you down or keep you from moving certain parts of your body. Sometimes people need to use them for safety or to help them feel calm. For example, if someone is very very scared and they might accidentally hurt themselves or someone else, then physical restraints might help them stay safe.
But it's also important to know that physical restraints can be uncomfortable and sometimes even hurt. That's why people should only use them when really necessary and always make sure to check on the person who is wearing them to make sure they are okay.
If you ever have concerns about physical restraints or see someone being restrained and you don't think it's okay, you should tell an adult or someone you trust. It's important to always make sure that people are safe and treated with respect.