Most people assume restlessness is a form of anxiety. The person who can’t sit through a movie without checking their phone, who gets up from the couch repeatedly for no clear reason, who feels an almost physical need to be doing something even when there’s nothing that needs doing — they must be anxious, right?
Not necessarily – at least, not exactly. They may have an anxiety component, but they may not have restless thoughts. Restlessness and anxiety can coexist, and often do. But restlessness has its own distinct roots, its own neurological and psychological explanations, and its own patterns that persist even in people who feel calm, content, and untroubled. For some people, the inability to sit still has nothing to do with a specific worry. Rather, it’s how their nervous system has been wired.
The Nervous System Baseline
Every person has a baseline level of nervous system activation — a resting state that reflects how much stimulation the brain seeks and how it responds to the absence of it. This baseline varies considerably from person to person, and it’s shaped by a combination of genetics, early environment, neurological development, and life experience.
People with a high activation baseline need more input to feel comfortable. Not because anything is wrong, and not because they’re anxious — but because their nervous system registers low stimulation as a kind of discomfort. The quiet, the stillness, the absence of something to engage with — these register as unpleasant in a way that the same person would not experience if they had a lower baseline.
The body’s response to that discomfort is movement. Fidgeting, pacing, changing positions, reaching for a phone, starting a task and abandoning it for another — these are all ways the nervous system generates its own stimulation when the environment isn’t providing enough. The behavior looks like restlessness from the outside. From the inside, it functions as self-regulation.
ADHD and the Stimulation-Seeking Brain
One of the most common neurological explanations for persistent restlessness is ADHD — and one of the least understood aspects of ADHD is that it isn’t fundamentally an attention problem. It’s a dopamine regulation problem.
The ADHD brain has a different relationship to dopamine — the neurotransmitter most centrally involved in motivation, reward, and the experience of interest — than a neurotypical brain. Dopamine release in response to routine, low-stimulation activities is less reliable and less sustained. The brain compensates by seeking out novelty, movement, and stimulation that produces dopamine more readily.
Restlessness in ADHD isn’t a failure of willpower or discipline. It’s the brain doing what brains do — seeking the neurochemical state it needs to function. The person who can’t stay seated in a meeting, who drifts constantly during a quiet afternoon, who needs background noise or movement to focus — that person isn’t choosing discomfort. Their nervous system is actively looking for what it needs.
This is worth naming specifically because ADHD in adults, particularly in women, is significantly underdiagnosed. Many adults who have lived with chronic restlessness their entire lives have never considered that there might be a neurological explanation for it — partly because ADHD is still culturally associated with hyperactive young boys, and partly because high-functioning adults develop coping strategies that mask the symptoms effectively enough that the underlying condition goes unrecognized.
Trauma and the Hypervigilant Nervous System
Trauma produces restlessness through a different mechanism, and it’s one that doesn’t always announce itself as anxiety. When the nervous system has been conditioned by past experiences of threat or unpredictability, it learns to stay alert even when the current environment is objectively safe. This is hypervigilance — a state of sustained readiness that the nervous system maintains as a protective measure based on what it has learned.
The hypervigilant nervous system struggles to settle. Not because the person is consciously worried about something, but because the body has learned that settling creates vulnerability. Stillness, for a nervous system shaped by trauma, can feel dangerous in a way that has nothing to do with present-moment thought. The restlessness that follows isn’t experienced as fear — it’s experienced as an inability to relax, a physical urge to keep moving, a discomfort with quiet that seems irrational but persists regardless.
This is one of the reasons that somatic therapy and EMDR can be particularly effective for trauma-driven restlessness. Talk-based approaches address the cognitive understanding of what happened. Somatic and EMDR approaches address the stored physiological state that keeps the nervous system in motion — which is where the restlessness actually lives.
The Role of Mood
Depression is commonly associated with lethargy and slowing down, which it is — but depression also produces a form of restlessness that isn’t always recognized as such. Psychomotor agitation, a formal feature of certain depressive presentations, involves a physical restlessness that coexists with low mood, difficulty concentrating, and loss of motivation. The person is exhausted and unable to sit still at the same time — which is disorienting to experience and easy for others to misread.
Generalized anxiety disorder includes restlessness as a clinical criterion — the difficulty sitting still, the inability to relax, the feeling of being keyed up or on edge. But the restlessness in GAD often doesn’t feel like anxiety to the person experiencing it. It feels like physical agitation, like irritability, like a body that simply won’t settle. The cognitive component of anxiety — the worrying — may be more or less prominent, but the physiological component runs continuously regardless.
Brainspotting and DBT both address the physiological and emotional dysregulation components that drive restlessness in mood and anxiety presentations, offering approaches that work with the body’s experience rather than asking the body to simply be still through willpower.
Temperament and Personality
Not all restlessness has a clinical explanation. Some people are constitutionally oriented toward activity, novelty, and engagement — a temperament that reflects how they’re built rather than anything that needs to be treated. High sensation-seeking is a well-documented personality trait associated with a preference for novel, complex, and intense experiences and a lower tolerance for routine and monotony. People high in sensation-seeking aren’t restless because something is wrong. They’re restless because their nervous system is calibrated for more input than ordinary daily life typically provides.
The distinction between temperament-driven restlessness and clinically significant restlessness matters because the response to each is different. Temperament doesn’t require treatment — it benefits from environments, activities, and lifestyle structures that provide the stimulation the person genuinely needs. Clinical restlessness benefits from treatment that addresses its underlying cause.
When to Pay Attention to Restlessness
Restlessness that has always been present, that doesn’t cause significant distress, and that doesn’t interfere meaningfully with daily life may simply be a feature of how a particular nervous system is wired. Restlessness that is new or worsening, that is accompanied by other symptoms, that is interfering with sleep or relationships or the ability to function, or that feels like something has changed — that restlessness is worth bringing to a professional.
Therapy for anxiety, trauma-informed approaches, and therapy for high achievers who have been managing a high-activation nervous system their entire lives through relentless productivity are all relevant entry points depending on what’s driving the restlessness for a specific person.
If you’ve spent your life feeling like you can’t fully settle — and you’re curious about what might be underneath it — Flourish Psychology works with adults in Brooklyn and throughout New York City on exactly this kind of question. Call 917-737-9475 or reach out through the contact page to schedule a consultation.