Heart Racing When Trying to Sleep: Settling It Down

A racing heart at bedtime is usually anxiety, not your heart: a quiet, still room makes any heartbeat easier to notice, and unresolved stress keeps your sympathetic nervous system active when it should be winding down. Slow your exhale for about a minute, then add 60 to 90 seconds of bilateral stimulation to help your body stand down.

You finally get into bed, and that’s exactly when your heart picks up. Not after a run, not mid-argument, just you, lying still in the dark, feeling your pulse tap harder and faster than it has any obvious reason to. The quieter the room gets, the louder it feels, until you’re half-monitoring your chest, half-wondering if this is something to worry about.

Why does your heart race the moment you lie down?

Nothing new is happening to your heart itself. Two ordinary things are stacking on top of each other, and bedtime happens to be where you notice both at once.

The first is chemical. Stress and anxious thoughts, even the low-grade kind you don’t consciously register, keep your sympathetic nervous system, your body’s alert system, partly switched on. It signals your adrenal glands to release adrenaline, which binds to receptors on your heart and speeds it up, part of an old, automatic response built for threat, not for falling asleep (StatPearls, 2024).

The second is attention, and it’s specific to bedtime. Research on the cognitive model of insomnia has found that trying to fall asleep pushes people toward monitoring physiological cues, like heart rate, and other signs that sleep might not come easily. That monitoring itself sharpens the very sensation it’s watching for (Harvey, 2002).

Cleveland Clinic adds a simpler, more mechanical piece: lying down brings your heart physically closer to your chest wall. A quiet bedroom also removes the background noise that normally covers a heartbeat you’d otherwise never notice (Cleveland Clinic). Most people carry the same heartbeat around all day. Night just strips away the camouflage.

If this happens most nights, not only after stressful ones, it may mean your nervous system isn’t fully powering down even at rest, a pattern researchers call hyperarousal (Journal of Sleep Research, 2023). When it’s your whole body that won’t settle, not just your pulse, unwinding a wound-up body before bed covers that wider pattern.

How do you calm it down, without getting up or turning on a light?

This works lying down, eyes closed, in the same position you’re already in.

Step 1: Lengthen your exhale for about a minute

Breathe in through your nose, then let your exhale run longer than the inhale, roughly twice as long if that’s comfortable. This is the same pattern that works on a daytime racing heart, and our guide to slowing a racing heart goes deeper on why it works, if you want it.

Step 2: Add 60 to 90 seconds of bilateral stimulation

Bilateral stimulation (BLS) is the rhythmic, left-right input at the center of EMDR therapy, and the butterfly hug is built for exactly this moment because it needs no light and no open eyes:

1. Cross your arms over your chest, one hand resting on each opposite upper arm, a self-administered technique developed by EMDR clinicians (EMDRIA).
2. Tap left, right, left, right, slowly, closer to a lullaby pace than a metronome.
3. Keep your attention loosely on your heartbeat rather than trying to ignore it, and notice if it eases as you go.

A 2025 study in BJPsych Open measured EEG and peripheral physiology during bilateral stimulation and found it lowered autonomic arousal, the body’s alert state. That’s part of why it works here too, even with your eyes shut and nothing upsetting on your mind.

If keeping your own rhythm feels like one more task tonight, EmEase, a self-guided EMDR app, can run alternating audio tones for you instead, hands-free, in the web app. The beginner’s guide to self-guided bilateral stimulation walks through pacing it well.

Step 3: Check in, and repeat if it’s still racing

Rate how activated you feel, roughly 0 to 10. Still high? Run another minute of the longer exhale, then another round of taps.

Most people notice a real shift within two to five minutes. You’re not forcing sleep here, only clearing what’s standing in front of it.

Is a racing heart at bedtime dangerous?

Almost always, no. A resting heart rate over 100 beats per minute is technically tachycardia, but brief, anxiety-driven spikes at bedtime are common and not, on their own, a medical emergency (American Heart Association). Caffeine late in the day, alcohol, and a heavy dinner can all add to it too.

Treat it differently if it comes with chest pain, especially pain spreading to your arm, jaw, or back, along with shortness of breath or fainting. The American Heart Association is direct that panic and cardiac symptoms can feel alike and aren’t reliably told apart by feel alone. That combination needs medical attention, not a breathing exercise (American Heart Association, 2022). Get any new, unexplained, or worsening pattern checked by a doctor.

For some people, a racing heart at bedtime tips into something bigger: a sudden wave of fear, breathlessness, and a pounding heart that jolts you fully awake, unconnected to any dream. That’s a nocturnal panic attack, a distinct, researched pattern that responds to the same treatments as daytime panic (Journal of Clinical Sleep Medicine, 2013). It doesn’t signal a worse case of anxiety than the daytime kind. If that sounds familiar, or a racing heart keeps showing up again and again, our guide to panic sensations goes deeper on where a recurring pattern like this tends to start.

A racing heart at bedtime is uncomfortable, not dangerous, on the vast majority of ordinary nights. Give your body a clear, physical signal that it’s safe to stand down, through your breath and through bilateral stimulation, and it usually listens faster than the dark makes it feel like it will. For more of the same, our sleep and wind-down collection has the full set.