Cannabis & Exercise: Recovery, Performance & Pain

The theory is compelling: CBD reduces inflammation, THC modulates pain, and together they could help athletes recover faster from intense training. The reality is more complex.

A 2023 double-blind RCT tested 5mg/kg CBD in pill form on 24 well-trained female athletes after eccentric leg exercise. CBD was unable to reduce fatigue, limit inflammation, or restore performance compared to placebo. No significant differences were found in any recovery marker.

However, a 2024 pilot study tested a beverage powder containing CBD (35mg), CBG (50mg), beta-caryophyllene, BCAAs, and magnesium. Participants who took the active formulation reported less soreness interference with daily activities 48 hours post-exercise — a functional improvement of potential clinical importance. Objective recovery measures still showed no difference.

A 2025 study on CBD oil (60mg daily for 6 days) in well-trained athletes found a reduction in myoglobin — a marker of muscle damage — in advanced athletes. But no effects were seen on performance parameters like jump height, squat strength, or running time.

A 2025 dose-ranging study gave runners 50mg or 300mg CBD before endurance exercise. Neither dose affected heart rate, perceived exertion, oxygen consumption, or time to exhaustion. The researchers concluded CBD was 'likely to be neither ergolytic nor ergogenic at low to moderate doses.'

CBD's anti-inflammatory properties are well-established in preclinical research. In petri dishes and animal models, CBD reduces pro-inflammatory cytokines, suppresses TNF-alpha, and modulates immune cell activity. The question is whether these effects translate to human athletes after exercise.

The evidence in humans is mixed. The 2023 female athlete study found no reduction in inflammatory markers after CBD supplementation. The 2025 CBD oil study similarly found no effects on IL-6 or IL-10 — key inflammatory cytokines.

However, a 2023 Frontiers review highlighted that inflammation is a necessary part of the recovery process. "Inflammation is necessary to recover from significant efforts. Still, excess inflammation could cause problems." The goal shouldn't be to eliminate inflammation entirely, but to modulate it — reducing excessive responses without impairing the healing process.

CBD's effects on cortisol are another promising avenue. A study found that 300mg CBD induced glucocorticoid regulation in humans, potentially helping modulate the stress response to intense training. But this has not been specifically studied in athletic populations.

For now, the evidence suggests CBD's anti-inflammatory effects are real but modest in the context of exercise recovery. They're unlikely to make a dramatic difference for most athletes.

Pain management is where cannabis shines brightest for athletes. The same mechanisms that make it effective for chronic pain apply to exercise-induced pain — just with a different context.

Delayed onset muscle soreness (DOMS) peaks 24-72 hours after intense exercise and is driven by micro-tears in muscle tissue and the resulting inflammatory response. Several studies suggest cannabinoids can reduce the subjective experience of DOMS.

The 2024 CBD/CBG beverage study found that the active group reported significantly less soreness interference with daily activities at 48 hours post-exercise. While objective measures didn't differ, the functional improvement is clinically meaningful — athletes who feel less sore can return to training sooner, even if their muscles haven't fully recovered.

Topical CBD products are popular among athletes for localised pain relief. However, a 2025 study testing topical CBD gel on quadriceps and hamstrings after drop jumps found no improvement in muscle function recovery or DOMS compared to placebo. The topical application may not penetrate deeply enough to affect muscle tissue.

For managing exercise-related pain, oral CBD (50-300mg) or balanced THC:CBD products may be more effective than topicals. The key is using them strategically — after training rather than before, and as part of a comprehensive recovery plan that includes nutrition, sleep, and active recovery.

Does cannabis affect exercise performance? The short answer is: not positively, and possibly negatively.

A 2025 study on runners found that neither 50mg nor 300mg CBD improved time to exhaustion, heart rate efficiency, or perceived exertion during endurance exercise. The only significant finding was a lower respiratory exchange ratio with 300mg CBD, suggesting a potential shift towards fat oxidation — but this didn't translate to performance improvements.

For high-intensity exercise, the evidence is similarly neutral to negative. A 2024 study found that CBD had no effect on countermovement jump height, squat strength, or bench press performance. Another study found that both performance levels (advanced and highly advanced athletes) experienced muscle damage and performance reduction from intense training regardless of whether they took CBD.

For THC specifically, the picture is clearer: THC impairs coordination, reaction time, and motor function — all detrimental to athletic performance. No credible study has found performance-enhancing effects of THC for exercise. WADA bans THC in competition for good reason.