The body has its own volume knob.
Your child crashes into the couch on purpose. They climb the thing they are not supposed to climb. They chew on sleeves and pencils, spin until they are dizzy, squeeze in too tight, and seem to have one speed: full. Sitting still for circle time or dinner looks almost painful for them, and asking them to do it can spark the whole house.
Here is what is actually happening. The Explorer's nervous system takes in less feedback from movement, pressure, and the position of their own body than most, so it goes looking for more. The crashing and climbing and chewing are not defiance or excess energy with no purpose. They are a body trying to feel itself, to get the input it needs to stay organized and calm. Occupational therapists call this sensory seeking, and it is one of the most common and most misread profiles there is.
The same drive that wears you out is curiosity, courage, and a body that learns by doing. Explorers test the edges of everything because that is how they figure out where the edges are. The motion is not the problem to be stopped. It is fuel the system is asking for, out loud.