Boredom Isn't Just 'Mildly Annoying' — It May Make Your Body More Sensitive to Pain
Being bored is usually filed under mildly annoying. But a randomized controlled trial out of Sweden suggests it does something measurable to the body: it makes pain arrive sooner.
Researchers put 114 pain-free adults through a boring video, a funny one, or a neutral control, then pressed on four muscles with a device that records the exact pressure at which sensation turns into pain. Boredom lowered that threshold at every site tested. Humor pushed it back up at two of them.
Three Videos, 114 Volunteers, and a Device Pressing on Four Muscles
The trial, published in the Scandinavian Journal of Pain, was conducted by researchers at the Department of Psychology at Linnaeus University in Växjö, Sweden. Participants were randomly assigned to one of three mental state inductions: boring, humorous, or control. Everyone first watched an emotionally neutral video and had baseline pressure pain thresholds measured. Thresholds were then measured again after the assigned induction. The four sites were the right and left trapezius and the right and left tibialis anterior.
Results showed that boredom significantly lowered pressure pain thresholds at all four locations, with large effect sizes. Induced humor significantly raised thresholds at the right and left trapezius, with moderate effect sizes. The authors concluded that boredom increases sensitivity to pain in healthy people.
The Brain Has a Volume Knob for Pain, and Mood Turns It
Pain is not a fixed readout of tissue damage. Signals traveling up from the body get modulated on the way, and the brain sends signals back down that can amplify or dampen them. That system — the descending nociceptive modulatory pathway — is the mechanism the researchers were probing.
Their working idea draws on the notion that sensory signals can go unnoticed when attention is captured by something external. A funny video takes up attentional bandwidth. A boring one leaves it idle, and the low-level bodily signals that would otherwise be filtered out have room to register.
That framing is an interpretation, not a demonstration. The study measured pain thresholds, not brain activity, so it cannot show which circuits were doing the work. What it does establish is that a mood state most people would call trivial produced a large, reproducible change in how quickly pressure became painful.
The Humor Result Was Smaller and Narrower Than the Boredom Result
The asymmetry in the findings is worth noticing. Boredom moved thresholds at all four sites, with large effect sizes. Humor moved them at two sites, both in the trapezius, with moderate effect sizes. The shin muscles did not respond to humor. Whether that reflects something about where different muscles sit in the body's pain processing, or simply that the humor induction was a weaker manipulation than the boredom one, is not something a single trial can answer.
It also matters that the outcome measured was a pressure pain threshold in a laboratory, not pain as anyone experiences it in daily life. Pressure algometry is a standard, reproducible research tool, but the point at which a probe on the shoulder starts to hurt is not the same thing as a migraine, a flare of arthritis, or postsurgical pain.
Nobody Should Swap a Pain Plan for a Comedy Special
Every participant was pain-free at enrollment. That single design choice determines how far the results can travel. The researchers wrote that whether the effect extends to clinical pain populations should be examined in future research. That is a call for more work, not a treatment recommendation.
The context is not trivial, though. CDC data found that 24.3% of U.S. adults had chronic pain in 2023, and 8.5% had pain that frequently limited their life or work activities. If ordinary shifts in mental state reliably nudge pain sensitivity in either direction, that is a lever worth understanding — particularly for people in settings that are structurally boring, such as long hospital stays and rehabilitation.
For now, the honest summary is narrower and more interesting than the obvious headline. The finding is not that laughter is medicine. It is that boredom — a state nobody thinks of as a physiological event — appears to turn the dial the wrong way. Anyone dealing with persistent pain should work with a clinician on a treatment plan rather than drawing conclusions from a laboratory study in healthy volunteers.
Key Questions Answered
- What did the study actually test? Whether induced boredom or humor changes the pressure at which healthy adults start to feel pain, measured at four muscle sites before and after watching a boring, funny, or neutral video.
- What were the main results? Boredom lowered pressure pain thresholds at all four sites with large effect sizes. Humor raised thresholds at the right and left trapezius with moderate effect sizes.
- Does this mean watching comedy will relieve pain? No. Participants had no pain to begin with, and the researchers explicitly said that whether the effect applies to people with clinical pain needs further study.
- Why would a mental state change pain at all? The brain modulates incoming pain signals rather than passing them through unchanged. The researchers propose that boredom leaves attention idle, allowing more bodily signals to register.
- What are the main limitations? Healthy volunteers only, a single laboratory pain measure, and no direct measurement of the brain mechanism the authors propose. The humor effect also appeared at only two of four sites.
If you want to track the relationship between your pain perception, mood states, and daily activities, the Xiaoshu Health App can sync relevant metrics from Apple Health to help you better understand your body's changes and provide valuable reference for conversations with your clinician.