The safest approach is to gently guide a sleepwalker back to bed without waking them at all. If you do need to wake them, use a quiet voice and light touch from a safe distance. Waking a sleepwalker won’t cause a heart attack or any serious medical harm, but it will almost certainly leave them confused and disoriented, and in some cases they may lash out physically.
Why Sleepwalkers Are So Hard to Wake
During a sleepwalking episode, the brain is in two states at once. The parts responsible for movement and emotion are awake and active, while the parts that handle awareness, judgment, and memory remain locked in deep sleep. Researchers studying brain activity during sleepwalking episodes found that the motor cortex fires with the same fast electrical patterns seen during full wakefulness, while the frontal and parietal regions (the areas you need for rational thought) actually show an increase in the slow, heavy brainwaves of deep sleep.
This split state explains a lot. The sleepwalker can navigate furniture, open doors, even hold conversations, yet has no conscious awareness of what they’re doing and will typically remember none of it. It also explains why waking them is difficult: those deep-sleep brain regions are actively resisting arousal, essentially fighting to stay asleep even as the rest of the brain is up and moving.
Guiding Them Back to Bed
The recommended first response is not to wake the sleepwalker but to redirect them. Speak in a calm, quiet voice and use a gentle touch on the arm or shoulder to steer them back toward their bedroom. Most sleepwalkers will comply with simple, soft-spoken directions like “let’s go back to bed” without fully waking up. They may mumble or seem confused, but they’ll usually follow your lead.
Stay calm yourself. Sudden movements, loud voices, or grabbing the person can trigger a fear response. Remember, the emotional centers of their brain are active while the rational ones are offline. If they perceive a threat, they may react physically before any conscious thought kicks in.
If You Must Wake Them
Sometimes redirection doesn’t work, or the person is heading toward a dangerous situation: a staircase, an open window, the front door. In those moments, waking them is the right call. Here’s how to do it safely.
Keep some physical distance. Stand at arm’s length rather than directly over them. Call their name in a clear but not loud voice, gradually increasing volume if needed. If you touch them, keep it to a light hand on the shoulder. Avoid shaking them or shouting.
Expect confusion. When a sleepwalker wakes mid-episode, they enter what clinicians call a confusional arousal. Their thinking is severely impaired, they may not recognize you or know where they are, and this disorientation can last several minutes. In one documented case, a patient spent 10 minutes in a confused state after waking, believing someone had been chasing him, with no memory of screaming or knocking objects off the wall moments earlier.
Vigorous attempts to shake someone awake often fail to produce full arousal and can provoke resistance or even aggression. This isn’t intentional. The person is reacting from a brain state where fear and motor responses work fine but judgment and recognition do not. Once the confusion clears, speak calmly, orient them to where they are, and help them back to bed.
The Heart Attack Myth
You’ve probably heard that waking a sleepwalker can cause a heart attack, a seizure, or some kind of shock to the system. None of that is true. Waking a sleepwalker carries no risk of cardiac arrest or other serious physiological trauma. The worst outcome is the temporary confusion and disorientation described above. Experts who advise against waking sleepwalkers do so not because it’s medically dangerous, but because it’s usually unsuccessful and the resulting confusion makes things harder for everyone involved.
Making the Home Safer
If someone in your household sleepwalks regularly, the bigger priority is preventing injury during episodes you might sleep through yourself. Sleepwalking doesn’t cause direct health problems, but the indirect risks are real: walking outside, falling down stairs, bumping into sharp objects, or reaching for kitchen knives.
- Lock doors and windows. Deadbolts or childproof latches can prevent a sleepwalker from leaving the house. Consider keyed locks placed high on exterior doors.
- Block staircases. Baby gates or similar barriers at the top and bottom of stairs reduce fall risk.
- Remove trip hazards. Low tables, loose rugs, power cords, and clutter on the floor all become dangerous when someone is walking without conscious awareness.
- Swap out breakable items. Replace glass lamps, decorations near walkways, and fragile items on nightstands with unbreakable alternatives. If sliding doors have standard glass panels, consider replacing them with shatter-resistant material.
- Add motion-triggered alarms. Bells on bedroom doors or small motion sensors in hallways can alert you when an episode begins, giving you time to intervene.
When Sleepwalking Needs Medical Attention
An occasional sleepwalking episode, especially in children, is common and rarely a concern. Frequent episodes are a different story. Regular sleepwalking in adults often points to an underlying sleep disorder or medical condition that’s fragmenting deep sleep and triggering episodes. If sleepwalking happens multiple times a month, causes injuries, disrupts the household, or starts suddenly in adulthood, a sleep evaluation can help identify what’s driving it.