Runners are always on the hunt for an edgeโwhether itโs the latest pair of carbon-plated shoes, a magical gel, or a mantra to get through the grind. But what if your next performance booster didnโt come from a store or a training plan, but from your mouth? Specifically, a few choice swear words.
According to a new study published in NeuroReport, swearing can improve physical performance and increase pain tolerance. Researchers tested this in both real-life physical settings and controlled environments, finding that participants who cursed during physical tasks performed better than those who kept things PG.

Translation? Dropping an f-bomb at the right moment might be the key to a shiny new PB.
Why Swearing Works: Science Says Itโs Not Just for Sailors
So, how exactly does swearing work its magic? It all comes down to our brainโs fight-or-flight response. Swearing activates this primal mechanism, triggering an adrenaline release, which enhances strength, focus, and pain resistance. Itโs like giving your mind and body a quick jolt of powerโno pre-workout needed.
Pain tolerance, in particular, gets a major boost from swearing. Ever stub your toe and immediately blurt out something unprintable? That instinctive curse isnโt just venting frustration; itโs helping your brain dial down the pain. For runners, who regularly flirt with discomfortโwhether itโs burning quads on a hill or the soul-sucking sensation of hitting the wallโthis could be a game-changer.
Strategic Swearing: When and How to Use It on the Run
Not all runs demand profanity, but there are key moments where a well-placed swear word can work wonders. Tackling speed work or intervals? Letting out a colorful phrase before a sprint might give you an extra push. Battling an unforgiving hill? Swear your way to the top. And, of course, the final stretch of a race or long run is prime cursing territoryโwhen your legs feel like bricks, and every step is a mental battle, a little verbal release can help you power through.
But donโt think you need to go full-on R-rated every time you lace up. The power of swearing lies in its emotional impact, not the specific word. If a classic four-letter word doesnโt do it for you, something milder (or hilariously creative) can still deliver the same psychological boost. The key is tapping into that cathartic releaseโitโs all about what feels natural to you.
Of course, timing and setting are everything. If youโre running through a busy park or in the middle of a family-friendly race, you might want to keep your curses internal. But when youโre on a solo long run, struggling through a grueling workout, or surrounded by a crew that gets your vibe, feel free to let it rip.

Swearing Isnโt CheatingโItโs Science
For years, runners have relied on mantras to push through tough moments: โI am strong,โ โJust one more mile,โ or even the classic โYouโve got this.โ But for some of us, thereโs no mantra as motivating as a good, loud swear. And now, thanks to science, we know thereโs more to it than just emotional releaseโitโs a legitimate, biologically-backed performance enhancer.
So, the next time your legs are screaming on that uphill or your lungs are burning in the final stretch, donโt be afraid to get a little salty. Whether itโs an f-bomb, a mild โdang,โ or your own unique creation (my personal favorite is “oh rats”), swearing might be the extra fuel you need to crush your goals. Just, you know, maybe watch the volume if youโre running past a daycare.