If you’re reading this in bed, unable to fall asleep, start here: get comfortable on your back, let your feet flop naturally to the sides, and try the cognitive shuffling technique described below. It works in minutes for many people. Then, once you’ve gotten through tonight, the rest of this article covers what to change during the day so this stops happening.
Try Cognitive Shuffling Right Now
Racing thoughts are the most common barrier to falling asleep, and the fastest way to interrupt them is a technique called cognitive shuffling. It works by giving your brain just enough to do that it can’t maintain a coherent worry spiral, but not so much that it keeps you alert. Here’s how:
Pick a simple, emotionally neutral word like “table” or “water.” Then go through each letter and think of unrelated words that start with that letter. For “table,” you’d picture a tree, then a train, then a towel for the letter T, then move on to A and picture an apple, an arrow, an ant. Visualize each word briefly before moving to the next. If you lose track of where you are or forget your starting word, that’s actually the point. Your thoughts are drifting toward sleep. If you’re still awake after finishing one word, just pick another and start again.
The 15-Minute Rule
If you’ve been lying in bed for more than 15 to 20 minutes without falling asleep, get up. This comes from Stanford’s insomnia program, and it’s one of the most effective behavioral changes for chronic sleep trouble. Go to another room and do something quiet: read a physical book, listen to soft music, do a crossword puzzle, meditate. Return to bed only when you feel genuinely sleepy again. Repeat this as many times as needed throughout the night.
The activities that don’t work here are important to know. Don’t do housework, exercise, get on the computer, play video games, or watch anything intense. And don’t fall asleep on the couch. The goal is to train your brain to associate your bed with sleep, not with lying awake and stressing.
Stop Trying to Fall Asleep
This sounds counterintuitive, but sleep researchers at the University of Pennsylvania have studied a technique called paradoxical intention that works precisely because it removes the pressure. The idea: sleep is an involuntary process, and the harder you try to force it, the more anxious you become, which keeps you awake.
Lie comfortably in bed with the lights off, but keep your eyes open. Give up any effort to fall asleep and any concern about still being awake. When your eyelids start to feel heavy, gently tell yourself “just stay awake for another couple of minutes.” Don’t force yourself to stay awake, just stop fighting to sleep. By removing the performance anxiety, you let sleep arrive on its own. Some people also find it helpful to imagine every possible catastrophe that could result from not sleeping tonight, then see those scenarios as absurd and exaggerated. Humor deflates the worry.
What’s Actually Keeping You Awake
Your body falls asleep using two systems that need to align. The first is your circadian clock, which responds to light exposure and tells your brain when it’s nighttime. The second is sleep pressure, which builds throughout the day as a byproduct of cellular metabolism called adenosine accumulates in your brain. The longer you’re awake and the more active you are, the more adenosine builds up, and the stronger your drive to sleep becomes.
When you can’t fall asleep, one or both of these systems is off. Maybe your circadian clock is confused because you spent the evening staring at screens. Maybe your sleep pressure is low because you napped in the afternoon or sat sedentary all day. Or maybe you have plenty of both, but anxiety is overriding the signals. Each of these has a different fix.
Screens and Light Exposure
Blue light from phones, tablets, and laptops suppresses your body’s natural melatonin production. Harvard researchers found that 6.5 hours of blue light exposure suppressed melatonin for twice as long as green light and shifted circadian rhythms by three hours. The practical guideline: avoid bright screens for two to three hours before bed.
If that feels impossible, at minimum use your device’s night mode and dim the brightness as low as it goes. But the single best thing you can do for your circadian rhythm doesn’t happen at night. It happens in the morning. Going outside for 30 minutes after waking, even on a cloudy day, tells your circadian clock what time it is, which makes your melatonin release more reliable that evening.
Your Bedroom Environment
Room temperature has a surprisingly large effect on how quickly you fall asleep. Your core body temperature needs to drop slightly to initiate sleep, and a warm room fights that process. Set your thermostat between 60 and 65 degrees Fahrenheit. If you don’t have air conditioning, a fan pointed at your bed or sleeping with lighter covers can help approximate this.
Darkness matters too. Even small amounts of light, from a charging indicator or a streetlight through curtains, can interfere with melatonin. Blackout curtains or a sleep mask are simple fixes that make a real difference.
What to Change During the Day
Exercise is one of the most reliable ways to fall asleep faster at night. High-intensity exercise increases adenosine levels in your brain, directly boosting sleep pressure. You don’t need to run a marathon. Any workout that gets your heart rate up will help, though finishing at least a few hours before bed gives your body time to wind down.
Caffeine has a longer effect than most people realize. Even coffee consumed six hours before bed can measurably disrupt sleep, sometimes without you noticing the disruption. If you work a standard daytime schedule, cut off caffeine by 2 or 3 p.m. That includes tea, energy drinks, and chocolate in large quantities.
Napping is the other common culprit. Because naps clear adenosine from your brain, they reduce the sleep pressure you’ve built up during the day. If you’re regularly struggling to fall asleep at night, eliminating daytime naps, or at least keeping them under 20 minutes before early afternoon, can make a significant difference.
When Melatonin Helps (and How to Use It)
Melatonin is not a sleeping pill. It’s a timing signal that tells your brain nighttime has arrived. This means it works best for people whose circadian rhythm is shifted, like night owls trying to sleep at a conventional hour, or anyone dealing with jet lag.
Most people take too much, too late. For a sedating effect, like on a long flight, 30 to 45 minutes before your desired sleep time works. But for resetting your sleep schedule, the effective approach is taking it three to four hours before you want to be asleep. So if your target bedtime is 11 p.m., take it between 7 and 8 p.m. Adults should start with 1 mg and increase by 1 mg each week only if needed, up to a maximum of 10 mg. Lower doses often work better than higher ones for circadian adjustment.
The Military Sleep Method
This technique, reportedly developed to help soldiers fall asleep in difficult conditions, is a systematic body relaxation that pairs well with any of the mental techniques above. Lie on your back and let your feet fall naturally to the sides rather than pointing them at the ceiling. Then progressively relax every muscle group, starting with your face (forehead, jaw, tongue), moving down through your shoulders, arms, chest, and legs. With each area, consciously release tension rather than just thinking about the body part. After your whole body is relaxed, clear your mind using one of the cognitive techniques: shuffling, paradoxical intention, or simply visualizing a calm scene like lying in a canoe on a still lake.
The combination of physical relaxation and mental distraction addresses both sides of the problem. Your body can’t fall asleep while holding tension, and your mind can’t fall asleep while solving problems. Letting go of both at the same time is what finally allows sleep to take over.