The sleep rules you don't actually need to follow

What if I told you that being perfect with your sleep habits is actually the very thing keeping you awake? Let's talk about why it's time to stop working so hard at sleep. Welcome back to Savvy Psychologist. I'm one of your interim hosts, Dr. Jade Wu. Every week, we'll help you face life's challenges with evidence-based approaches, a sympathetic ear, and zero judgment. If you've ever struggled with sleep, you've probably gotten advice. Lots of advice. Put away your phone two hours before bed, no caffeine after noon, exercise in the morning, not in the evening, go to bed at the same time every night, take melatonin, etc. You may even have followed all of these rules religiously and still found yourself staring at the ceiling at 2am, wondering what you're doing wrong. Or maybe you've been lucky to not have major sleep problems like insomnia, but feel guilty about not being as good with your sleep hygiene as you should be. Now, here's what I want you to know. These sleep hygiene tips are not bad advice. Of course, they're like brushing and flossing, great foundational habits. But if you have a cavity, no amount of brushing is going to fix it. Similarly, sleep hygiene doesn't fix sleep problems like insomnia. In fact, in clinical research trials, sleep hygiene education is often used as the control condition, the thing researchers compare real treatments against. These habits support general sleep health, but they don't resolve chronic insomnia on their own. And when people double down on the rules out of desperation, that rigidity can actually backfire. So I'm going to walk you through which sleep hygiene rules are overstated, which ones actually matter, and what to do if you need more than sleep hygiene. So first, let's go through some overstated rules of sleep hygiene. Rule number one that is overstated is that you must avoid screens before bed. I'm sure you've heard this one. The blue light from your phone and TV suppresses melatonin and destroys your sleep. So you should put away all screens by 8 p.m. or suffer the consequences. The truth is more nuanced. Yes, light does affect our circadian rhythms, and yes, screens emit light. But here's the thing. The amount of blue light from your phone is tiny compared to, say, stepping outside, even on a cloudy day. And while laboratory studies have shown that very bright light exposure at night can shift your circadian clock, scrolling Instagram for 20 minutes or 30 minutes before bed is unlikely to be the reason you have insomnia. I once worked with a patient, let's call her Priyanka, who had cut out all screens after 9 p.m. She'd also eliminated caffeine, alcohol, and evening exercise. She was following every sleep hygiene rule in the book. And she was miserable. Not just because she still had insomnia, but because she stripped all the small pleasures from her evenings in service of sleep. So my advice to her? Girl, live your life. Enjoy your Great British Baking Show marathons. For Priyanka, depriving herself of these little enjoyments was actually making her insomnia worse, because all that rigid rule following was turning sleep into a high-stakes project, which created anxiety and pressure around that time. Now, this doesn't mean screens are totally innocent. If you're using your phone a lot or while in bed, while you're supposed to be sleeping, that's a different issue. Then you're training your brain to associate the bed with wakefulness. And if you're doom-scrolling stressful news right before bed, the content maybe matters more than the blue light. So the quick and dirty tip here is, you don't need a strict screen curfew. What matters more is what you're doing on screens and where. Keep stimulating or stressful content away from bedtime and keep the bed itself just for sleep, not for catching up on emails. Okay, so that was overstated rule number one, which was that you should totally avoid screen before bed. Now we know, maybe not 100%. Now let's move on to overstated rule number two. Never exercise in the evening. Mmm, this one is really good. This myth has been thoroughly debunked, but it persists somehow. The idea is that exercise revs you up, so doing it close to bedtime will make it harder to fall asleep. But the research says otherwise. A study of more than 12,600 people found that even moderate to vigorous exercise within two hours of bedtime was perfectly fine for sleep. In fact, exercise was associated with slightly more sleep and easier time falling asleep, probably because physical activity is generally good for our mental and physical health. And think about it. Between work, family obligations, bad weather, and a million other demands on our time, fitting in exercise is hard enough without also restricting when we're allowed to do it. If the only time you can hit the gym or go for a run is 7 p.m., do it. Your sleep will thank you for the movement, regardless of the timing. So the quick and dirty tip here is exercise whenever you can fit it in. The best time to exercise is whenever you'll actually do it. Okay, so we went over screens, exercise. Now for overstated rule number three, melatonin will fix your insomnia. This is not so much a rule as just a common piece of advice. Now that melatonin has become wildly popular. In fact, sales increased by over 500% between 2003 and 2014 in the United States. And I think since then, it's become even more popular. Walk into any pharmacy and you'll see an entire aisle dedicated to it. Here's what the science actually says. The American Academy of Sleep Medicine does not recommend melatonin for treating insomnia. It's not that melatonin is that dangerous. It's that it probably won't help with chronic sleep problems. Melatonin is actually a hormone that signals to your body that it's nighttime. It helps regulate the timing of sleep, amongst other things, not the ability to sleep. This is why melatonin can be useful for jet lag or shifting your sleep schedule earlier or later if you have a circadian disorder. But if your problem is that you're lying in bed unable to fall asleep or waking up repeatedly throughout the night, melatonin is not addressing the actual issue. And here's another concern. Because melatonin is sold as a supplement in the U.S. rather than a medication, it's poorly regulated. Studies have found that the actual amount of melatonin in pills can be up to five times of what's listed on the label and some products contain other compounds like serotonin that aren't supposed to be there. So quick and dirty tip, if you've been taking melatonin for chronic insomnia, know that it's probably not the right tool for the job. Talk to your doctor about evidence-based treatments for insomnia instead. And the last overstated rule for today, last but not least, is overstated rule number four, which is to go to bed at the same time every night. Now this one surprises people because it sounds so logical, right? Consistency is good, right? Well, here's the nuance. Having a consistent wake time is actually much more important than having a consistent bedtime. Your wake time anchors your circadian rhythm and helps regulate your body's internal clock. But going to bed at the exact same time every night, especially if you're not actually sleepy, can backfire. If you force yourself into bed at 10 p.m. because that's your regular bedtime, but you're just not sleepy, you'll end up lying there awake. And every minute you spend in bed not sleeping teaches your brain that the bed is a place for wakefulness or even frustration and clock-watching or anxiety. This is called conditioned arousal, and it's one of the biggest perpetuating factors for chronic insomnia. A better approach? Go to bed when you're actually sleepy. Not just tired, but that heavy eyelids nodding off kind of sleepy. And keep your wake time consistent, yes, even on weekends. So the quick and dirty tip here is anchor your mornings, not necessarily your evenings. Get up at roughly the same time every day within about an hour's wiggle room, but let your bedtime flex based on when you're genuinely sleepy. Okay, now that we've debunked some of the overstated rules, let's talk about what actually matters for sleep health. Today, we're going to talk about three things that are genuinely worth your attention. First, light matters. But maybe not the way you think. Yes, keeping your bedroom dark is helpful, and dimming your lights in the evening as you wind down toward bed is a good idea. But here's what people often miss. Daytime light exposure matters even more. Your circadian rhythm, your body's internal clock, needs bright light during the day to stay properly calibrated, and I mean bright. Most people vastly underestimate how much light they need. Sitting in your living room, even if you're by a big window, or in your office, might might feel bright enough, but it's often nowhere close to what your brain actually needs and what you're getting when you go outside. So aim for at least 20 to 30 minutes of outdoor time, or equivalently bright light exposure, ideally in the morning or midday. A quick walk outside, even on a cloudy day, gives you far more light than sitting by window indoors. This helps keep your circadian rhythm strong, which in turn helps you feel alert during the day and sleepy at the right time at night. Second tip for what actually matters for sleep health is movement during the day. Now we already debunked the myth that you can't exercise in the evening, but here's the positive flip side. Regular physical activity genuinely does support better sleep. It helps build up your sleep drive, that biological pressure to sleep that accumulates the longer you're awake and the more you're active. So if you have insomnia and want to fall asleep and stay asleep more easily, strength training is especially effective for building sleep drive. But any movement counts. You can simply go outside to walk or play with your dog. You know, the goal is simply to be active during the day so your body is genuinely ready to rest at night. So light exposure during the day, movement during the day, and the third and last tip for today for what really matters for sleep is that if you have chronic insomnia, you likely need more than habit. You need treatment. The real perpetuating factors behind insomnia are usually not having enough sleep drive built up when you get into bed and having too much arousal at night, especially arousal that's become conditioned to your bed and bedroom. That means your body just gets too revved up or your brain gets too revved up when you go to bed. Now, cognitive behavioral therapy for insomnia, or CBTI for short, targets these factors directly. It's the most effective treatment we have, and it works by resetting your sleep drive, retraining your brain's associations with the bed, and building a healthy relationship with sleep. Sleep hygiene alone cannot do this deeper work. That's not a knock on sleep hygiene. It's just not what it's designed for. Brushing your teeth can't fill a cavity either, but that doesn't mean brushing is useless. So here's the bottom line. Sleep hygiene isn't nonsense, but it's also not the whole story. Some rules are overstated, and obsessing over them can backfire. What actually matters? Get plenty of bright light during the day, more than you probably think you need. Move your body regularly, and if you're struggling with insomnia, consider doing strength training specifically. Keep your bedroom dark and your evenings dim. And if you've been doing everything right and still can't sleep, you need insomnia treatment. Ask your doctor about cognitive behavioral therapy for insomnia, or CBTI. Let go of the rigid rules that are stressing you out. Remember, sleep is not an engineering problem to solve. It's a relationship to build. Now, which hygiene rules do you swear by, and which do you want to let go of? Let me know on LinkedIn at DrJadeWu. That's D-R-J-A-D-E-W-U. I can't wait to hear from you. All right, this was my last guest hosting episode. I was so honored to be back. Thank you for having me for these few weeks, and I look forward to maybe meeting you again on future episodes. The Savvy Psychologist is a Quick and Dirty Tips podcast. It's audio engineered by Steve Rickyberg. The director of podcasts is Holly Hutchings. Our podcast and advertising operations specialist is Morgan Christensen. Rebecca Sebastian is our marketing manager, and Nathaniel Hoops is our marketing contractor. Follow Savvy Psychologist on Apple Podcasts, Spotify, or wherever you listen to podcasts.