Couch Lock

Definition: Couch lock is slang for a heavy, deeply relaxed, sedated feeling after using cannabis that makes it hard to get up or do much of anything. It’s most often linked to high doses of THC, edibles, and strains marketed as indica. Couch lock is temporary and wears off as the high fades.

What Causes Couch Lock?

There’s no single proven cause. The main driver is dose: more THC acting on CB1 receptors in movement and reward areas of the brain means stronger sedation. Neurologist Ethan Russo has suggested that myrcene, a common terpene with sedating effects in animal studies, may contribute in some strains. That idea is plausible but not proven in humans.

What Makes Couch Lock More Likely?

• High doses, especially from concentrates
• Edibles, which produce a longer, more body-heavy effect
• Low tolerance
• Using cannabis late in the day, when you’re already tired
• Mixing cannabis with alcohol or other sedatives

Is Couch Lock an Indica Thing?

It’s commonly associated with indica strains, but research shows indica and sativa labels often don’t match a product’s actual chemistry. Dose and terpene profile are better predictors than the label.

How Do You Avoid Couch Lock?

Use a smaller dose, choose products with a lower THC percentage or some CBD, and save heavier strains for evenings when you plan to relax. If you’re already locked in, it will pass. Hydrate, have a snack, and don’t drive.

Related terms: Indica, Terpenes, Tolerance Break, Cotton Mouth

Sources: Russo EB, “Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects,” British Journal of Pharmacology, 2011; National Institute on Drug Abuse: Cannabis (Marijuana).