10/14/2026
WHAT HAPPENS INSIDE THE BODY WHEN STRESS RISES?
The Nervous System Behind Behavior | Part 2 of 4
One of the most interesting things about human behavior is that what we see on the outside doesn’t always tell us what’s happening on the inside.
A person may suddenly become restless, stop communicating, resist a familiar activity, or struggle with something they were able to do just an hour earlier.
It’s easy to focus on the behavior itself.
But what if their body has already begun responding to stress?
Our brain and nervous system are constantly communicating. When stress increases, physiological changes can influence attention, processing, emotional responses, and our ability to access familiar skills.
This doesn’t mean every challenging behavior is caused by an activated nervous system. Health, communication abilities, developmental differences, past experiences, learning history, and the environment may also contribute.
This is why Positive Behavior Support begins with understanding the individual.
We gather history, observe what happens before and after behavior, look for patterns, and consider different explanations before developing individualized supports.
The goal isn’t simply to change what someone is doing. It’s to understand what may be influencing it.
I especially welcome observations from families and professionals who have seen changes in communication, coping, or behavior when someone’s stress increases. Those experiences can add valuable perspectives to this discussion.
Please keep individual information confidential.
R3C Behavior Consultation LLC
Understanding behavior begins beneath the surface.