Tired but wired: why you feel sleepy all day but wide awake at bedtime

You yawned through the afternoon. You nearly nodded off on the couch after dinner. Then you get into bed, switch off the light, and suddenly your mind is wide awake, running through tomorrow's meetings and something awkward you said in 2019.

This week, posts about exactly that feeling trended online, summed up neatly by one line: "I always feel sleepy except when I actually want to sleep." If that sounds like you, you're in good company.

Being "tired but wired" is frustrating, but it usually has a few everyday causes you can work with. Here is why it happens, what to try in the hours before bed, and how the Thrive Health Band helps you see what shapes your own nights.

Why do I feel tired all day but awake at night?

Two systems work together to help you sleep. The first is sleep pressure, which builds the longer you're awake. The second is your body clock, a roughly 24-hour rhythm that tells your body when it's time to be awake and when it's time to wind down. The Sleep Health Foundation explains that light is the most important signal for this clock, and that the hormone melatonin rises at night as part of the shift towards sleep.

When the two line up, you feel sleepy at bedtime and drift off. When they don't, you can feel flat during the day and oddly switched on at night. A few common things pull them out of step:

A late or irregular bedtime. Going to bed and getting up at different times through the week makes it harder for your body clock to know when night begins. See our article on social jetlag.
Evening screens. The Sleep Health Foundation notes that more than about an hour and a half of bright screen use in the evening can leave you feeling less sleepy, and that interactive use, like scrolling and messaging, is more stimulating than passive things like reading.
Not much daylight. A day spent mostly indoors gives your body clock a weaker signal about when the day started.
Caffeine later in the day. An afternoon coffee can still be working at bedtime. Here's how long caffeine lasts.
A busy mind. Stress and worry, including worry about not sleeping, can keep you switched on. The Better Health Channel notes that worrying about sleep can feed sleep problems.
A long or late nap. A nap of more than about 30 minutes, especially in the evening, can make it harder to fall asleep.

What to try in the hours before bed

You can't force sleep, but you can make bedtime more appealing to your body clock.

Keep your wake time steady. Getting up at about the same time every day, weekends included, helps set your body clock so you feel sleepy at a similar time each night.
Get morning light. Time outside soon after waking gives your body clock a clear start to the day. See morning sunlight walks.
Set a screen curfew. Try putting your phone away in the hour before bed. If you do use a screen, dim it and switch to night mode, and choose something passive over something interactive.
Give worries an earlier slot. The Better Health Channel suggests setting aside half an hour of "worry time" well before bed, so you can remind yourself at bedtime that you've already done your thinking for the day.
Wind down with your breath. Slow breathing, or relaxing each part of your body from your toes up, can help you settle. Our guide to box breathing has a simple pattern to try.
Get up if you can't sleep. If you've been lying awake for a while, go to another room and do something restful in dim light until you feel sleepy again.
Keep naps short and early. If you nap, aim for under 20 minutes and earlier in the afternoon. Our naps and nights article has more.

How Thrive helps you understand your nights

Being tired but wired often follows a pattern, and Thrive helps you see yours. The Band has no screen, so there's nothing on your wrist to check at 11pm. Wear it day and night, and the Thrive by Optihealth app brings your days and nights together.

Sleep, four ways. Thrive shows Quality, Quantity, Regularity and Timing, plus hours slept, so you can see whether late, irregular nights line up with flat days.
Tonight's focus. Each day the app suggests a few simple actions for tonight, based on your recent sleep.
Bedtime Reminder. Turn on a reminder in the app, set from your sleep pattern or a time you choose, so winding down starts on time.
Experiments. Try Screen wind-down or Caffeine cut-off for seven days, and see what shifts in your sleep and stress.
Guided Breathing and Sound Sessions. Follow a 4-7-8 or box breathing guide, or try a Sound Session. Thrive's binaural beats may help you fall asleep.
Check-ins. Log your mood, energy and stress, and tag things like work stress or mental overload. Over a few weeks, Patterns can show what tends to go with your harder nights.
Ask Thrive. Try "Why am I wide awake at bedtime?" or "Do I sleep worse after late screens?"

Thrive also learns what is usual for you across nine areas of your health, from what the Band measures and what you log, and keeps track right across your health, including heart, HRV, temperature, stress and mood, gut health, nutrition, blood tests, medications and supplements and your medical history.

When to talk to your GP

A few wired nights now and then are normal, especially in a busy week. But if trouble falling or staying asleep goes on for more than a few weeks, you feel very sleepy during the day or when driving, a bed partner notices loud snoring or pauses in your breathing, or you feel low or anxious for a while, talk to your GP. Thrive isn't a diagnosis, but Ask Thrive can help you get ready by lining up a few weeks of your sleep, mood and energy, and you can show your Thrive trends to your GP. Here is how to use Ask Thrive before a GP appointment.

Before you buy

Thrive Health Band: A$589 for the first year (Band plus 12 months of the Thrive plan), paid upfront.

Free Australia-wide shipping (usually A$14.99). No automatic renewal.

At renewal: a new band plus 12 more months for A$589.

Or keep your band and renew the plan for A$240 a year.

Or A$29 a month with no lock-in.

One size, IP68, up to 14 days battery, 12-month warranty, not a medical device, no Apple Health sync. The app is Thrive by Optihealth on iPhone and Android.

See today's price and buy at thrivehealthband.com/get.

Consumer guarantees under Australian Consumer Law always apply. See Returns if something is wrong with your purchase.

Common questions

Why am I tired all day but can't sleep at night?

Often it's a mismatch between sleep pressure and your body clock. Irregular bedtimes, evening screens, late caffeine, little daylight and a busy mind can all leave you flat by day and switched on at night.

What should I do if I can't fall asleep?

If you've been awake for a while, get up, go somewhere dim and do something restful until you feel sleepy, then go back to bed. Keep your wake time the same the next morning.

Can Thrive show why I'm wired at night?

Thrive shows your sleep, check-ins and daily patterns together, so over a few weeks you can see what tends to go with your harder nights.

For more answers, see Questions.