Weed shakes are involuntary tremors or shivering that can hit during or after cannabis use. They’re uncomfortable and sometimes alarming, but they’re typically harmless and temporary. The fastest way to stop them is to warm your body, slow your breathing, and wait them out in a calm environment. Most episodes pass within 20 to 30 minutes as THC levels in your blood begin to drop.
Why Cannabis Causes Shaking
Weed shakes have more than one trigger, and understanding which one is driving yours helps you respond the right way.
THC activates receptors concentrated heavily in the cerebellum, the part of your brain responsible for coordinating movement. When those receptors get flooded, motor control temporarily breaks down. Animal studies confirm this effect is specific to the cerebellum and can be reversed with drugs that block those same receptors. In practical terms, it means a high dose of THC can make your muscles misfire, producing tremors, twitches, or full-body shaking.
THC also acts on the hypothalamus, the brain’s thermostat. Cannabinoids alter body temperature in a dose-dependent way: high doses tend to lower core temperature, while low doses can raise it. When your body temperature drops, your nervous system triggers shivering to generate heat, the same mechanism that makes you shake when you’re cold. So even if the room feels warm, your brain may be responding as though you’re freezing.
The third and often biggest contributor is anxiety. THC is known to increase feelings of anxiety, especially at higher doses. When anxiety spikes into something closer to panic, your fight-or-flight system floods your body with adrenaline. That adrenaline constricts blood vessels and sends trembling through your limbs. If you were already prone to anxiety before you consumed cannabis, THC can amplify it enough to trigger shaking you wouldn’t have experienced otherwise.
How to Stop Shakes Right Now
If you’re shaking and want it to stop, work on all three triggers at once: warmth, calm, and comfort.
- Warm up. Wrap yourself in a blanket, put on a hoodie, or hold a warm drink. Since THC can lower your core temperature, adding external heat addresses the shivering directly. A warm shower works well if you’re steady enough on your feet.
- Slow your breathing. Inhale for four counts, hold for four, exhale for four. This activates your parasympathetic nervous system and counteracts the adrenaline surge driving anxiety-related tremors. Repeat for a few minutes until your heart rate feels more settled.
- Change your environment. Move to a quiet, familiar space. Turn down bright lights. Put on something comforting to watch or listen to. Reducing sensory input helps lower the anxiety that fuels shaking.
- Hydrate and eat something. Drink water and have a light snack. Low blood sugar can worsen tremors, and dehydration compounds the physical discomfort. Something with sugar and carbs can help stabilize your system.
- Move gently. Light stretching or walking around the room can help release the tension your muscles are holding. You don’t need to exercise, just avoid staying rigid and clenched.
Resist the urge to consume more cannabis to “calm down.” Adding more THC to a system that’s already overstimulated will likely extend the experience rather than ease it.
What About CBD?
You may have heard that CBD can mellow out a harsh THC experience. The relationship is more complicated than that. While CBD on its own has been shown to reduce anxiety, combining it with THC doesn’t necessarily help with motor symptoms. A Johns Hopkins study found that when participants consumed 20 mg of THC alongside a high dose of CBD (640 mg) in edible form, the THC effects were actually stronger and longer-lasting. Blood levels of THC nearly doubled compared to the same dose taken without CBD. Participants experienced greater impairment of movement and thinking, not less.
This doesn’t mean all CBD products make things worse, but it does mean that reaching for a CBD gummy while you’re already shaking from THC may not be the quick fix you’re hoping for. The safest immediate strategy is the non-cannabis approach: warmth, breathing, and time.
How Long Weed Shakes Last
Shakes that happen while you’re actively high typically follow the arc of the high itself. If you smoked or vaped, expect the tremors to start fading within 15 to 30 minutes as peak THC levels drop. With edibles, the timeline stretches because THC enters your bloodstream more slowly and stays elevated longer. Edible-related shakes can persist for an hour or more.
There’s a separate scenario worth knowing about: withdrawal. If you use cannabis daily and stop suddenly, tremors can appear within one to two days as a withdrawal symptom. These are different from the shakes you get while high. Withdrawal-related tremors tend to resolve within about three weeks as your body readjusts.
How to Prevent Shakes Next Time
The most reliable prevention strategy is controlling your dose. Weed shakes are fundamentally a dose-dependent response. Your cerebellum, your thermostat, and your anxiety threshold all react more intensely when THC levels are higher. Start with a smaller amount than you think you need, especially with edibles where the delayed onset makes it easy to overconsume.
Choosing lower-potency products makes a measurable difference. Strains and concentrates vary widely in THC content, and switching from a high-potency option to something milder can eliminate shakes entirely for people who are prone to them. If you know your tolerance is low, treat that as useful information rather than something to push past.
Pay attention to your baseline state before consuming. If you’re already feeling anxious, cold, tired, or hungry, you’re more likely to experience shaking once THC enters the picture. Eating a meal beforehand, staying in a comfortable temperature, and being in a relaxed headspace all reduce your odds.
First-time or infrequent users are especially susceptible because their cannabinoid receptors haven’t adapted to THC exposure. If you’re new to cannabis, one or two puffs or 2.5 to 5 mg of THC in an edible is a reasonable starting point. You can always take more next time, but you can’t un-take what’s already in your system.