For most of human history, the strongest signals guiding human behavior came from inside the body. Hunger, fatigue, tension in the chest, a knot in the stomach, the calm that follows a deep breath—these sensations continuously shaped human decisions long before anyone had language for neuroscience or physiology. People recognized them intuitively. They spoke of “trusting the gut,” of courage rising in the heart, of fear tightening the belly. The body was always speaking, and behavior often followed.
We might think reason, culture, tradition and discovery guide our behavior. Indeed, they do, but as we shall see culture, tradition, discovery — even reason — are tools our bodies use to create safe environments. We created environments and traditions that helped us regulate our bodies.
Something historically unusual has happened in the last few decades. For the first time in human history, external stimuli likely outnumber the signals coming from our own bodies. Phones vibrate, notifications appear, advertisements scroll past, music and video autoplay, and social feeds refresh endlessly. Screens, signs, alerts, and prompts compete constantly for attention. At almost every waking moment, something outside the body is trying to guide behavior.
That shift matters because human decision-making did not evolve to prioritize external signals first. It evolved to regulate the body.
Culture Supports Homeostasis
Neuroscientist Antonio Damasio describes this ordering clearly in The Strange Order of Things. Biological regulation—homeostasis—comes first. The body constantly works to maintain stable conditions necessary for life: temperature, energy balance, chemical stability, and protection from threats.
The brain continuously maps these bodily states and produces feelings that represent them. Humans then interpret those feelings and build cultural systems around them.
In this view, culture is not separate from the body. Culture is an extension of biological regulation.
Early human societies developed norms, rituals, moral codes, and institutions partly to stabilize the conditions necessary for bodily well-being. Shared rules reduced conflict. Food practices organized energy supply. Social rituals helped regulate grief, fear, celebration, and cooperation.
Culture became, in effect, a collective tool for maintaining human homeostasis.
The Body Influences Decisions Before Conscious Thought
Long before conscious reasoning begins, bodily states influence decisions.
The stomach tightens when something feels risky. Breathing changes when a situation feels threatening or exciting. Muscles tense or relax in response to subtle cues. These signals travel through the autonomic nervous system and the enteric nervous system—the dense network of neurons embedded in the gut sometimes called the body’s “second brain.”
The brain interprets these signals as feelings, which then bias decisions before deliberate reasoning catches up.
That is why ordinary language remains full of bodily metaphors. People speak of “gut feelings,” of a “weight on the chest,” of a “bad feeling in the pit of the stomach.” These expressions reflect the nervous system’s continuous monitoring of bodily conditions and its role in shaping behavior.
We often believe we reason our way to decisions and then feel something about them. In reality, the order is frequently reversed. The body leans first. The mind explains later.
Culture Once Reinforced Bodily Signals
For thousands of years, culture tended to amplify internal signals rather than overwhelm them.
Work followed daylight. Meals occurred at predictable times. Communities developed rhythms—religious rituals, communal gatherings, seasonal work cycles—that helped regulate stress, recovery, and social cooperation. Even social norms functioned as stabilizers, reducing uncertainty and helping people maintain emotional and physiological balance.
Culture extended the body’s regulatory system outward into shared practices.
The goal was rarely stated in biological terms, but the effect was clear: societies developed structures that helped human nervous systems remain stable.
The Modern Stimulus Economy
The modern attention environment introduced something new: a continuous stream of engineered signals designed to capture attention.
Food marketing appears whether or not someone is hungry. Retail sites create urgency with countdown timers and scarcity warnings. Smartphones deliver alerts precisely timed to draw the user back. Social platforms generate endless novelty that keeps attention moving from one stimulus to the next.
None of these systems are necessarily malicious on their own. They evolved within competitive environments where capturing attention has economic value.
But taken together they create an environment where external signals frequently interrupt internal ones.
Many people recognize this experience in small ways. Someone opens a phone to check a message and finds themselves scrolling longer than intended. A person buys something they were not planning to purchase. Another feels restless or distracted without understanding why.
In many cases the body had already generated signals—fatigue, fullness, hesitation—but those signals were quieter than the surrounding external prompts.
The Body’s Signals Never Stopped
The important point is that bodily signals have not disappeared.
The nervous system still produces continuous feedback about the body’s state. Tightness in the shoulders, changes in breathing, tension in the stomach, and shifts in energy levels are all part of the body’s regulatory system. They exist to guide behavior toward conditions that maintain stability and well-being.
The challenge in modern life is not that these signals are gone, but that they are easy to overlook.
Small moments of attention can restore access to them. A brief pause during the day to notice breathing, muscle tension, or the general sense of ease or unease in the body can bring those signals back into awareness.
These check-ins do not require long periods of meditation or elaborate techniques. Often a few seconds is enough.
A Simple Daily Counterbalance
Modern life will always include external prompts competing for attention. Phones, screens, alerts, and advertising are not disappearing.
But the nervous system retains a simple way to recalibrate: noticing the body.
Set a few reminders during the day. When one appears, pause briefly. Let the shoulders soften. Take a slow breath. Notice what the body has been signaling.
Then continue with whatever you were doing.
The nervous system does not need dramatic interventions to regain balance. Often it only needs a moment to be heard.
And in a world where messages constantly tell us what to do next, those brief moments of attention may be the most reliable way to stay aligned with ourselves.