Enjoying pain is more common than most people realize, and it has a clear biological basis. When your body detects pain, it launches a chemical counterattack that can produce genuine pleasure, relaxation, and even euphoria. This isn’t a sign that something is wrong with you. It’s a built-in feature of how your nervous system works.
Your Brain Treats Pain Like a Threat, Then Overcompensates
The moment you experience pain, your brain releases beta-endorphins, neuropeptides that behave almost identically to morphine. These molecules bind to opioid receptors throughout your nervous system and set off a chain reaction: they block the release of an inhibitory neurotransmitter called GABA, which results in a surge of dopamine, the chemical most closely tied to pleasure and reward. In other words, pain triggers the same reward circuitry involved in eating, sex, and other experiences your brain considers worth repeating.
Pain also activates your body’s endocannabinoid system. Research published in the Proceedings of the National Academy of Sciences found that pain significantly increases the release of anandamide, a naturally produced compound that binds to the same receptors as cannabis. Anandamide crosses into the brain easily and produces its own wave of calm, pain relief, and mild euphoria. So when you feel pain, your body is essentially dosing you with its own versions of opioids and cannabinoids simultaneously.
The Rebound Effect: Why Relief Feels So Good
There’s another layer to this, and it explains why the moment pain stops can feel even better than the pain itself. Opponent-process theory describes how your brain responds to any intense sensation by generating an equal and opposite reaction. When something painful happens, your nervous system activates a slow-building counterprocess designed to pull you back toward emotional balance. The pain is the primary process. The pleasure is the opponent.
Here’s the key: the opponent process doesn’t shut off the instant the pain does. It lingers. So when the painful stimulus disappears, you’re left with the pleasurable rebound still running, producing a wave of relief that registers as genuinely rewarding. Research investigating this effect confirmed that participants rated the relief after pain as highly pleasant, supporting the idea that relief itself functions as a form of reward. This is part of why ice baths feel terrible during and incredible after, and why pressing on a sore muscle can feel oddly satisfying.
Benign Masochism: Enjoying Pain You Know Won’t Hurt You
Psychologist Paul Rozin coined the term “benign masochism” to describe something distinctly human: the enjoyment of experiences that your body interprets as threatening even though your mind knows you’re safe. Eating extremely spicy food is the classic example. Your mouth sends genuine pain signals. Your brain registers danger. But you know you’re sitting at a dinner table and nothing bad is actually happening.
That gap between what your body feels and what your mind knows creates a unique kind of pleasure. Rozin describes it as “mind over body,” a sense of mastery that comes from overriding your own alarm systems. Your body has been fooled, and the realization that there’s no real danger converts the negative sensation into something enjoyable. This requires what researchers call a “protective frame,” the psychological safety of knowing the threat isn’t real. It’s the same reason people enjoy horror movies, extremely hot saunas, the burn of a hard workout, or the sting of a fresh tattoo. The body screams danger. The mind says “I chose this,” and that contrast is inherently pleasurable.
Rozin argues this capacity is distinctly human because it requires a cognitive override, the ability to step outside your own physical experience and evaluate it from a distance. No other species seeks out capsaicin for fun.
The Runner’s High Is a Pain Response
Exercise is one of the most socially accepted ways people chase pain for pleasure, and the biology behind it reinforces everything above. The “runner’s high,” that floating, euphoric feeling during or after sustained effort, was long attributed purely to endorphins. Newer research tells a more complete story.
Running increases blood levels of both beta-endorphins and anandamide. But when researchers blocked opioid receptors with pharmaceutical blockers, the pain-reducing and anxiety-lowering effects of exercise persisted. When they blocked cannabinoid receptors instead, those effects disappeared. This suggests the endocannabinoid system, not endorphins, is the primary driver of exercise-induced euphoria. Anandamide generated during high-intensity activity acts as a short-term circuit breaker, producing pain relief, reduced anxiety, and a state of well-being that can last well beyond the workout itself.
So when you push through the burn of a hard set or the lung-searing final stretch of a run, you’re not just tolerating pain. You’re triggering a neurochemical cascade specifically designed to reward you for it.
Pain as Emotional Reset
Some people find that physical pain provides relief from emotional distress, and there’s a neurological reason for this. Brain imaging studies show that when the brain is occupied with processing a physical sensation, activity decreases in regions associated with emotional pain processing, including the thalamus and insula. In one striking finding, even the ambient noise of an MRI scanner was enough to reduce the emotional unpleasantness of pain by distracting the brain’s attention.
Physical pain, in effect, can temporarily crowd out emotional pain. It demands so much of the brain’s attention and resources that rumination, anxiety, and emotional overwhelm get pushed to the background. The flood of endorphins and endocannabinoids then replaces those difficult feelings with something closer to calm. For many people, this is an unconscious process: they don’t plan to use pain as an emotional tool, but they notice they feel better after intense exercise, a cold plunge, or even biting the inside of their cheek during a stressful moment.
When Pain-Seeking Becomes a Concern
There’s a meaningful difference between enjoying the burn of hot sauce and deliberately injuring yourself to cope with emotional pain. Benign masochism involves controlled, safe experiences where the “threat” is known to be harmless. Non-suicidal self-injury (NSSI) is clinically different. The DSM-5 defines it as deliberate self-inflicted tissue destruction on five or more days in the past year, motivated by the expectation that it will relieve emotional distress or solve interpersonal problems. It’s typically preceded by negative emotions or intrusive thoughts and causes significant distress or interference in daily life.
The neurochemistry is similar in both cases. The same endorphins, the same dopamine, the same temporary relief. What differs is the context, the control, and the consequences. If you enjoy spicy food, intense workouts, tattoos, cold exposure, or the soreness after a hard day of physical work, that falls squarely within the range of normal human experience. If you find yourself needing physical pain to manage emotions, or if the intensity keeps escalating, that pattern looks different and responds well to professional support.
Liking pain, in most of its everyday forms, is your brain working exactly as designed. You experience a negative stimulus, your nervous system floods you with its own pharmacy of feel-good chemicals, and you end up feeling better than you did before the pain started. It’s not strange. It’s chemistry.