Sleep Hygiene Mistakes You Might Be Making Every Night

This piece comes to us from Lola Mark, a freelance writer specializing in women’s health and wellness

You’ve got the silk pillowcase, the blackout curtains and maybe even a magnesium routine. But if you’re still waking up foggy or lying awake longer than feels reasonable, the problem might not be obvious. Some of the most common sleep hygiene mistakes are so woven into everyday habits that they barely register as habits at all. Here’s what might be working against you.

+ Your Bedroom Has an Identity Crisis

The bedroom does many jobs for many of us now. It’s a home office, a streaming room, a scroll zone and sometimes a place to eat dinner in peace. The problem is your brain is paying attention to all of it.

When you consistently do stimulating things in bed like working, watching or debating whether to text back, your nervous system stops associating that space with rest. Over time, lying down stops being a cue for winding down and becomes just another activity.

The fix is refreshingly simple: keep the bed for sleep. If you can’t drift off, get up and do something quiet in low light, like listening to calming music or reading a book, until you feel genuinely drowsy.

+ Your Wind-Down Routine Starts Too Late

Most of us don’t start winding down until we’re already exhausted, but that’s too late. Your body needs time to shift out of high-alert mode, and that transition doesn’t happen the moment you decide you’re ready for bed.

Cortisol, your main alertness hormone, doesn’t drop on command. If you’ve been replying to emails, watching something intense or doom-scrolling until 11 p.m., your nervous system is still running warm when your head hits the pillow.

Build at least 45 minutes to an hour of low-stimulation time before you want to go to sleep. Dim the lights, put on something undemanding or just sit quietly. The goal isn’t to feel sleepy immediately, but to stop adding fuel to the fire.

+ Weekend Sleep Feels Like a Treat, but It’s Costing You

Sleeping in on Saturday feels restorative. In reality, it’s quietly shifting your internal clock, and by Monday morning, your body has no idea what time zone it’s in.

This is called social jet lag, and it’s more disruptive than most of us realize. Even a two-hour difference between your weekday wake time and your weekend wake time is enough to affect sleep quality, mood and energy for the first half of the week. You don’t have to be rigid about it, but keeping your wake-up time within about an hour of your usual time makes a real difference over time.

+ Your Room Is Too Warm

Your body needs to drop its core temperature to fall asleep and stay asleep. If your room is warm, that process is harder than it needs to be.

The sleep-friendly temperature range is between 60° and 65° Fahrenheit. If that feels cold, consider taking a warm shower or bath before bed. It brings blood flow to the surface of your skin, helping release heat and nudging your core temperature down afterward. Cooling the room, keeping your feet uncovered or using a lighter blanket can all support the process, too.

+ You’re Treating Sleep Like a Luxury, Not a Health Priority

It’s easy to see sleep as the first thing to sacrifice when you’re busy, but treating sleep as a luxury, rather than a nonnegotiable part of your health, is a mistake.

The impact goes far beyond feeling tired. Research links poor sleep to an elevated risk of heart disease, including high blood pressure and cholesterol. When you cut sleep short, you’re interrupting crucial maintenance work that your cardiovascular system relies on. Over time, this can also negatively affect your metabolism, contributing to weight gain and other health issues.

This isn’t about scaring yourself into better habits. It’s about understanding that the hour you lose to your phone at midnight isn’t neutral. Instead of seeing sleep as passive downtime, try framing it as one of the most powerful and straightforward things you can do for your long-term health.

+ Your Caffeine Cutoff Is Too Late

It can take anywhere from 2 to 12 hours for your body to eliminate only half of the caffeine you’ve consumed. That means a 3 p.m. latte could still be doing its job at 9 p.m. A reasonable cutoff for most people is somewhere around 1 p.m. or 2 p.m., and earlier if you’re sensitive to it. If you’re relying on sleep supplements to counteract a late caffeine habit, you’re making the work harder than it needs to be.