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The pattern, described
You are watching TV at 10pm and your eyes keep closing. You drag yourself upstairs, brush your teeth and get into bed. Then, within minutes, your mind is wide awake and running through tomorrow.
This is one of the most common things people with insomnia describe. It is frustrating, because the sleepiness was right there a moment ago.
Learned wakefulness: how a bed becomes a cue
The brain links places with states. A kitchen can make you feel hungry. A desk can put you in a work frame of mind. After weeks of lying awake and frustrated in bed, the bed can start to work in the same way. It becomes a cue for being alert.
Researchers call this conditioned arousal. It fits with a wider idea known as the hyperarousal model of insomnia, where the body and mind stay too switched on at night. The sofa has no history of bad nights, so sleep can creep up on you there.
Why dozing on the sofa makes it worse
Sleep drive builds through the day and is what helps you fall asleep at night. A 20-minute doze in front of the TV spends some of it. By the time you get into bed, there is less drive left to carry you off.
So the evening doze does two things. It takes the edge off your sleepiness, and it gives the bed one more night to stay linked with being awake.
What the behavioural approach suggests
The technique aimed at this is called stimulus control. The AASM guideline lists it as one of the behavioural options for chronic insomnia, and a 2024 analysis found it among the more useful parts of CBT-I. The main steps are:
- Go to bed only when you feel sleepy.
- Use the bed for sleep and sex, not for TV, phones or work.
- If you are wide awake or frustrated, get up and go back when sleepy.
- Get up at the same time each morning.
There is more on each step in stimulus control explained.
What to do instead of dozing in the evening
Staying awake on the sofa is harder than it sounds. A few things can help:
- Sit upright in a chair rather than lying across the sofa.
- Do something with your hands, like a puzzle, sorting post or light chores.
- Keep the room a little brighter and cooler until near bedtime.
- Stand up and move for a few minutes when you feel yourself drifting.
When you feel properly sleepy close to your planned bedtime, go to bed straight away. Keep the routine short so the sleepiness does not fade on the way.
How long until the bed feels sleepy again
A link that took months to form can take a while to change. Many people need a few weeks of steady practice before the bed starts to feel like a place for sleep again. The early nights can be harder, with more getting up than usual.
This is general education and is not advice for you in particular. If you also snore loudly or feel very sleepy in the day, try our free self-check and talk to a GP before changing your routine.
FAQ
- Why can I sleep on the sofa but not in bed?
- After many restless nights, the bed can become linked with being awake. The sofa carries no such link, so sleepiness can take over there more easily.
- What is conditioned arousal?
- It is the term for a learned link between a place and feeling alert. With insomnia, the bed and bedroom can become cues that switch the mind on.
- Should I sleep on the sofa if I can't sleep in bed?
- It can feel like a fair swap, but it tends to keep the bed linked with wakefulness. The usual advice is to stay up somewhere else and go back to bed when sleepy.