Excitement triggers the same arousal chemicals in your brain as stress does, which is why the night before a vacation, a big event, or even something you’re genuinely looking forward to can leave you staring at the ceiling. The good news: because excitement-driven wakefulness follows a predictable biological pattern, you can work against it with specific techniques that calm your nervous system and redirect your brain.
Why Excitement Keeps You Awake
When you’re excited, your brain floods with norepinephrine and dopamine. These chemicals directly activate the ascending arousal pathway, a network of brain regions whose entire job is keeping you alert. At the same time, they suppress your sleep-promoting neurons by inhibiting the part of your brain (in the preoptic area) that normally quiets everything down so you can drift off. Norepinephrine alone does this through at least three parallel mechanisms: it stimulates wake-promoting neurons, activates alertness centers in the hypothalamus, and actively shuts down sleep-promoting cells.
This creates a frustrating loop. You know you should sleep, so you try harder, which generates performance anxiety about sleeping, which further activates your arousal system. Research on paradoxical intention, a clinical insomnia technique, has confirmed that the effort of trying to fall asleep directly interferes with the natural winding-down process your brain needs. The harder you push, the more awake you become.
Stop Trying to Fall Asleep
This sounds counterintuitive, but one of the most effective things you can do is gently try to stay awake. Lie in bed with the lights off and keep your eyes open, calmly resisting sleep rather than chasing it. This technique, called paradoxical intention, was developed in the 1970s and works by breaking the cycle of sleep effort and frustration. Clinical data shows it outperforms passive approaches specifically by reducing sleep performance anxiety. When you stop monitoring whether you’re falling asleep, your autonomic nervous system calms down, and sleep arrives on its own.
Write It Out for Five Minutes
Your excited brain is running through plans, possibilities, and things you don’t want to forget. A study from Baylor University measured this directly: 57 young adults were randomly assigned to spend five minutes before bed either writing a to-do list for the next few days or journaling about things they’d already done. The to-do list group fell asleep significantly faster. Even more telling, the more specific and detailed the list, the faster people fell asleep. Vague lists didn’t help as much.
So before you get into bed, grab a notebook and spend five minutes writing down everything on your mind. What you need to pack, what time you’re leaving, who you need to text, what you’re looking forward to. Get granular. This offloads the mental inventory your brain is trying to hold onto, giving it permission to let go.
Use Your Breathing to Flip the Switch
Slow, controlled breathing is one of the fastest ways to shift your nervous system from its alert mode into its rest-and-digest mode. The key is making your exhale longer than your inhale. Research on heart rate variability confirms this: slow breathing with extended exhalation significantly increases vagal tone (a marker of parasympathetic, or calming, nervous system activity), while slow breathing with extended inhalation does not produce the same effect.
A simple approach: breathe in through your nose for four counts, then breathe out slowly through your mouth for six to eight counts. Focus on breathing from your belly rather than your chest, letting your abdomen expand on each inhale. Diaphragmatic breathing at a slow rate consistently increases parasympathetic nervous system activity as measured by changes in heart rate, blood pressure, and heart rate variability. You don’t need a complicated pattern. Just slow down and exhale longer than you inhale.
Play the Cognitive Shuffle
If your mind keeps racing back to whatever you’re excited about, the cognitive shuffle is a technique designed to mimic the random, disconnected thought patterns your brain naturally generates as you fall asleep. It was developed by Luc Beaudoin, a cognitive scientist at Simon Fraser University, based on his research into how sleep onset actually works.
Here’s how to do it: think of a random, emotionally neutral word like “garden.” Take the first letter, G, and visualize as many objects as you can that start with that letter. Grapes. Guitar. Goat. Globe. Picture each one briefly before moving to the next. When you run out of G words, move to the second letter, A. Acorn. Airplane. Avocado. The images should be mundane and unrelated to whatever has you excited. Avoid topics like work or anything emotionally charged.
This works because it diverts your attention away from the planning and rehearsing thoughts that keep your brain in alert mode. As sleep researcher Eleni Kavaliotis at Monash University explains, the technique mimics the scattered, random thought patterns the brain naturally produces during the transition into sleep. Your brain interprets this mental activity as a signal that it’s safe to power down.
Cool Your Body Down
Your core body temperature needs to drop for sleep to begin. Declines in core temperature are directly linked to rising melatonin levels, and melatonin accounts for roughly 40% of the natural overnight temperature dip your body goes through. When you’re excited, your body runs warmer because your arousal system is active, similar to how vigorous exercise before bed raises both core temperature and heart rate.
Keep your bedroom between 60 and 67°F (15 to 19°C). Anything above 70°F is too warm for good sleep. Beyond adjusting the thermostat, you can speed up the cooling process: take a warm shower 60 to 90 minutes before bed (the subsequent heat loss from your skin accelerates the core temperature drop), wear light or minimal clothing, and stick a foot out from under the covers. Your feet and hands are your body’s primary radiators for dumping heat.
Consider Magnesium on High-Arousal Nights
If you regularly struggle to sleep before exciting events, magnesium bisglycinate may be worth keeping on hand. A randomized, placebo-controlled trial found that 250 mg of elemental magnesium (as bisglycinate) taken daily produced a modest but statistically significant improvement in insomnia symptoms over four weeks compared to placebo. Part of the benefit likely comes from the glycine component, which has shown independent sleep-promoting effects at doses around 3 grams.
This isn’t a knockout pill, and it won’t override acute excitement on its own. But combined with the behavioral techniques above, it can help take the edge off physiological arousal. The effect size is small, so treat it as one tool in the toolkit rather than a standalone solution.
Putting It Together on the Night
Start an hour or two before bed by dimming lights, cooling the room, and avoiding screens that feed your excitement (stop refreshing the weather forecast for your trip). About 30 minutes before bed, do a five-minute brain dump: write down every detail, plan, and stray thought related to what you’re excited about. Once in bed, try the extended-exhale breathing for a few minutes to slow your heart rate. If your mind wanders back to tomorrow, switch to the cognitive shuffle. And if none of that works immediately, stop trying to force sleep. Lie quietly, keep your eyes gently open, and let sleep come to you instead of chasing it.
Most people on high-excitement nights add 15 to 30 extra minutes to their normal time to fall asleep. That’s normal and not worth worrying about. One slightly shorter night of sleep before a big day rarely affects performance or enjoyment. The worst thing you can do is watch the clock and calculate how many hours you have left, which only feeds the arousal cycle that’s keeping you up.