By the OFFFIELD Editorial Team. Published July 16, 2026. Last updated July 16, 2026.

Key Takeaways

• A 2026 randomized, double-blind pilot study in Nutrients found runners felt significantly more calm (up 21%) and relaxed (up 22%) after 300mg of CBD before a two-mile time trial, versus placebo.
• CBD also cut perceived effort by about 8% at the one-mile mark, with no drop in run performance and no change in heart rate or blood pressure.
• The likely reason runs through the endocannabinoid system: anandamide signaling in the amygdala acts as a brake on fear and stress.
• This is early, small-sample evidence, not proof. CBD is not a treatment for anxiety, and OFFFIELD makes no such claim.

The hardest opponent most athletes face is not on the other side of the field. It shows up the night before, sits in the stomach at the start line, and turns a warm-up into a wrestling match with your own nervous system. Coaches call it nerves. Sport psychologists call it competitive state anxiety. Runners just call it the reason they slept badly.

Now a new piece of research puts a number on something the endurance world has whispered about for years. CBD and race-day anxiety may be more connected than the stigma around cannabis ever let us admit, and the reason runs straight through the endocannabinoid system (ECS), the body's own stress-regulating network.

A 2026 Pilot Study Gave Runners CBD Before a Time Trial

Published in the journal Nutrients in 2026, a randomized, double-blind, placebo-controlled crossover study asked a simple question: what happens when you give a runner CBD before a hard effort? Twelve recreational runners (eight women, four men, average age 25.5) took either 300mg of CBD isolate or an identical placebo, waited two hours, then ran a two-mile treadmill time trial as fast as they could. Weeks later they came back and did it again with the other treatment.

The performance numbers barely moved. Two-mile times were about 3.1% faster on CBD, but that difference was not statistically significant. Blood pressure, heart rate, heart rate variability, and gut symptoms all looked the same on both days.

The feelings did move. On the State-Trait Anxiety Inventory, runners reported feeling significantly more calm (up 21%) and more relaxed (up 22%) on CBD than on placebo, with medium-to-large effect sizes. They also rated the run 8% easier at the one-mile mark, a real drop in perceived exertion at the exact point where a race starts to hurt. The researchers' conclusion was measured: an acute dose of CBD may help runners in shorter events feel calmer and find the effort easier, without impairing performance.

Calm, and clear, and not slower. That is the whole OFFFIELD thesis in one sentence.

Why the Endocannabinoid System Is the Body's Stress Brake

To understand why a cannabinoid would touch competition nerves at all, you have to look at what the ECS actually does. It is a signaling system of receptors (CB1 and CB2) and the messenger molecules that activate them, chief among them anandamide, named after the Sanskrit word for bliss. Anandamide is built on demand, does its job, and then gets broken down by an enzyme called FAAH.

Here is the part that matters for a start line. In the amygdala, the brain's threat-detection hub, anandamide tone acts like a brake on fear. Research has shown that acute stress rapidly ramps up FAAH, which depletes anandamide in the basolateral amygdala and lets anxiety climb. Slow that enzyme down, keep anandamide around longer, and animals show less anxiety and better fear extinction, the process of learning that a once-threatening cue is now safe. Convergent human evidence points the same way: people carrying a genetic variant that raises endocannabinoid signaling show lower amygdala reactivity to threatening faces and blunted stress responses.

CBD nudges this system rather than hijacking it. It is a poor fit for the CB1 receptor that THC activates, so it does not get you high. Instead, part of its calming reputation comes from slowing anandamide breakdown and from acting on serotonin 5-HT1A receptors involved in mood and stress. The result is an anxiolytic effect that shows up without sedation or intoxication.

The Public-Speaking Study That Started It

The Nutrients running trial did not appear out of nowhere. Its intellectual grandparent is a now-classic 2011 study in Neuropsychopharmacology, where researchers put people with social anxiety through a simulated public speaking test, the lab version of a start line. A single dose of CBD before the speech cut anxiety, cognitive impairment, and discomfort so sharply that the treated group's response looked like that of healthy controls who never had anxiety in the first place.

Public speaking and racing are cousins. Both are high-arousal, evaluated performances where the body floods with stress chemistry before anything physical even happens. That a cannabinoid can take the edge off the anticipatory spike, without dulling the person, is exactly why athletes have been quietly curious.

This Is a Small Study, and Honesty Is Part of the Brand

We will not oversell twelve runners. This was a pilot study, and it comes with real limits. The sample was tiny. The overall anxiety score did not change, only specific items like calm and relaxed did. Every single participant correctly guessed whether they had taken CBD or placebo, which means the blinding leaked and expectation could have colored the results. The dose, 300mg of pure CBD isolate, is far higher than what is in a low-dose gummy, and the study deliberately excluded regular cannabis users.

None of that is a reason to dismiss it. It is a reason to read it for what it is: an early, directionally interesting signal that lines up with decades of mechanistic work on the ECS and stress. Good science is a stack of small bricks, and this is a useful brick.

Where OFFFIELD Fits: Support the System, Do Not Sedate It

OFFFIELD was built on the idea that exercise itself is the original ECS drug. Movement raises your own anandamide and 2-AG, which is a big part of why a run can quiet a busy mind. Our High Performance Energy Gummies are designed to work alongside that biology, not override it: a precise, stackable dose of 3mg THC, 10mg CBG, 40mg CBD, and 10mg of natural caffeine from yerba mate, built for a lift that stays clear-headed.

We are not going to tell you a gummy treats anxiety. It does not, and we would not make that claim. What we will say is that the philosophy behind Run High, Not Stoned is the same one this research keeps circling: the goal is a calmer, more present version of you, dialed in with a subtle dose, not a checked-out one. You can read more about how the ECS shapes focus and stress on our Science page.

Frequently Asked Questions

Does CBD reduce race-day anxiety?

A 2026 pilot study found that 300mg of CBD taken two hours before a two-mile time trial made runners feel significantly more calm and relaxed than a placebo, and reduced their perceived effort at the halfway point. It is early, small-sample evidence, not proof, and CBD is not a treatment for anxiety disorders.

Will CBD make me slower or sedated before a workout?

In this study, CBD did not impair performance; two-mile times were slightly faster on CBD, though not significantly, and heart rate and blood pressure were unchanged. CBD does not activate the CB1 receptor the way THC does, so it is not intoxicating.

Is CBD allowed for competitive athletes?

CBD has been off the World Anti-Doping Agency prohibited list since 2019 and is permitted in and out of competition. THC remains prohibited in-competition. Product mislabeling is a real risk, so athletes subject to testing should choose brands with transparent third-party lab results.

How does the endocannabinoid system affect anxiety?

The ECS, through anandamide signaling in the amygdala, acts as a brake on fear and stress. When that signaling is preserved, stress responses are dampened and fear extinction improves, which is why the system is a leading target for anxiety research.

Sources and References

1. Stewart LK, et al. "The Effects of an Acute Dose of Cannabidiol on Health and Two-Mile Time Trial Performance: A Pilot Study." Nutrients, 2026;18(1):29. https://doi.org/10.3390/nu18010029 (ClinicalTrials.gov NCT06364254)
2. Bergamaschi MM, Queiroz RHC, Chagas MHN, et al. "Cannabidiol Reduces the Anxiety Induced by Simulated Public Speaking in Treatment-Naive Social Phobia Patients." Neuropsychopharmacology, 2011;36(6):1219-1226. PMC3079847
3. Gunduz-Cinar O, et al. "Convergent translational evidence of a role for anandamide in amygdala-mediated fear extinction, threat processing and stress-reactivity." Molecular Psychiatry, 2013;18(7):813-823. PMC3549323
4. Gunduz-Cinar O, Hill MN, McEwen BS, Holmes A. "Amygdala FAAH and anandamide: mediating protection and recovery from stress." Trends in Pharmacological Sciences, 2013;34(11):637-644. PubMed 24325918
5. Bhattacharyya S, et al. "Cannabinoid Regulation of Fear and Anxiety: an Update." Current Psychiatry Reports, 2019;21:38. PMC6486906
6. Charytoniuk T, et al. "The Endocannabinoid System and Physical Exercise." International Journal of Molecular Sciences, 2022. PMC9916354
7. U.S. Anti-Doping Agency. "Marijuana FAQ" (CBD removed from the Prohibited List in 2019; THC prohibited in-competition). usada.org

Related Reading

• Cortisol and the ECS: Your Body's Built-In Stress Brake
• Flow State and the ECS: The Neuroscience of the Zone
• Cannabis and Exercise: Enjoyment vs Perceived Effort
• The Olympics Is the Last Major Holdout Still Banning Cannabis

Legal disclaimer: This article is for educational purposes only and is not medical advice. OFFFIELD products are hemp-derived and formulated for healthy adults. They are not intended to diagnose, treat, cure, or prevent any disease, including anxiety or any other mental health condition. CBD and THC affect people differently. If you are experiencing anxiety or another mental health concern, talk with a qualified healthcare professional. Athletes subject to drug testing should review current WADA and league rules before using any cannabinoid product. Keep out of reach of children.