Why You’re Tired but Still Can’t Sleep

Few things are more frustrating than feeling exhausted throughout the day, only to become wide awake when your head finally reaches the pillow.

You may struggle to fall asleep, wake repeatedly during the night or find yourself awake much earlier than planned. The following day, you feel tired, irritable and less able to concentrate, but when bedtime comes around again, the same pattern repeats.

Sleep difficulties are not always caused by one “bad habit”. Stress, hormones, health conditions, medications, alcohol, caffeine and our daily routines can all play a part.

Understanding those influences is the first step towards improving your sleep without blaming yourself.

Why is sleep so important for your health?

Sleep is not simply a period when the body switches off. It is an active process that supports memory, emotional regulation, immune function, metabolism and physical recovery.

A few disrupted nights are part of normal life and are unlikely to cause lasting harm.

However, regularly getting too little sleep, or sleeping poorly over a prolonged period, can affect how you feel and function during the day.

Ongoing sleep deficiency has been associated with an increased risk of several long-term health problems, including high blood pressure, cardiovascular disease, metabolic conditions and poor mental health. However, these relationships are complex, and poor sleep is usually one of several interacting risk factors rather than the sole cause of illness. The National Heart, Lung and Blood Institute explains how sleep deficiency can affect health.

Sleep also affects our capacity to make other healthy choices. When you are exhausted, preparing balanced meals, exercising, managing stress and responding patiently to the people around you can all feel more difficult.

This is why sleep is one of the foundations of lifestyle medicine rather than an optional extra to consider once everything else has been addressed.

Why can you feel tired but still be unable to sleep?

Feeling tired and being ready to sleep are not always the same thing.

Our sleep is influenced by two main biological processes. The first is sleep pressure, which gradually builds the longer we are awake. The second is our circadian rhythm, which is the internal body clock that helps regulate when we feel alert and when we feel sleepy.

These systems can become disrupted by irregular waking times, shift work, travel, long daytime naps, insufficient natural light or spending extended periods awake in bed.

Stress can create another difficulty. You may feel physically exhausted while your mind remains alert, reviewing conversations, making tomorrow’s list or worrying about whether you will sleep.

The harder you try to force sleep, the more pressure and frustration you may create.

Over time, the brain can begin to associate the bed with wakefulness, worry and clock-watching rather than rest.

This does not mean your sleep problem is “all in your head”. It means that sleep is affected by a combination of biological, psychological, behavioural and environmental factors.

Common lifestyle factors that disrupt sleep

There is no single reason why everybody sleeps poorly, but several common factors are worth exploring.

Stress and an overactive mind

Stress is one of the most common causes of short-term insomnia. Work pressures, caring responsibilities, relationship difficulties, health concerns and financial worries can all make it harder to switch off.

The NHS lists stress, anxiety and depression among the common causes of insomnia. It also notes that environmental factors, shift work, menopause, pain, certain medicines and sleep disorders may contribute. You can read the full NHS overview of insomnia and its causes.

Relaxation techniques can help, but stress management is not simply about having a bath or downloading a meditation app. Sometimes the pressures affecting your sleep need to be addressed during the day rather than managed only at bedtime.

Through stress management coaching, you can explore the patterns, boundaries and responsibilities that may be keeping your nervous system in a continual state of alert.

Caffeine

Caffeine blocks the action of adenosine, a chemical involved in building sleep pressure.

Its effects can remain in the body for several hours, although sensitivity varies considerably between individuals.

Coffee is not the only source. Tea, energy drinks, cola, chocolate, supplements and some medicines can also contain caffeine.

Rather than assuming you must give it up completely, notice when you consume it and how it affects you. Moving your final caffeinated drink earlier in the day may be enough to make a difference.

Alcohol

Alcohol may initially make you feel sleepy, but it does not necessarily provide restorative sleep. It can lead to lighter, more fragmented sleep and may contribute to waking during the second half of the night.

It can also worsen snoring, night sweats and symptoms of obstructive sleep apnoea in some people. The NHS notes that although alcohol may help you fall asleep, it can reduce the depth and quality of your sleep.

Screens and stimulation

Screens are often blamed entirely on blue light, but the issue is broader than that.

Late-night scrolling can keep the brain emotionally and mentally engaged. News, work emails and social media may increase stress at the very point when you are trying to wind down. Screen use can also delay bedtime without you noticing.

You do not necessarily need to ban every device from the evening. Creating a clear stopping point and choosing calmer activities before bed may be more realistic.

An inconsistent routine

Sleeping late after a poor night is understandable, but it can reduce sleep pressure and make the following night more difficult. Long or late naps can have a similar effect.

One of the most helpful ways to support your body clock is to maintain a relatively consistent waking time, even after a disrupted night.

The NHS recommends getting up at the same time each day, going to bed only when you feel sleepy and avoiding sleeping in after a poor night.

What actually helps you sleep better?

Better sleep rarely comes from one perfect evening routine. It usually develops through several small changes that support your body clock, reduce unnecessary stimulation and rebuild a healthier relationship with sleep.

Begin with your morning

A good night’s sleep starts earlier than bedtime.

Getting outside in natural daylight after waking can help reinforce your circadian rhythm.

Morning movement, regular meals and a consistent waking time can also provide useful signals to your internal body clock.

Rather than concentrating entirely on what happens during the final hour of the day, consider how your whole routine prepares your body for sleep.

Create a gradual wind-down period

Your body may need time to move from activity into rest.

Choose a small number of calming and repeatable activities, such as dimming the lights, reading, stretching, listening to music or preparing for the next morning.

The aim is not to construct a complicated “perfect” routine. The aim is to give your brain a predictable signal that the active part of the day is ending.

The NHS provides further practical suggestions in its guidance on how to fall asleep faster and sleep better.

Stop trying to force sleep

Going to bed very early because you feel tired may seem sensible, but spending long periods awake in bed can strengthen the association between bed and frustration.

Go to bed when you feel sleepy rather than simply because the clock says you should. If you remain awake and become increasingly frustrated, it may help to get up, go somewhere comfortable and do something quiet until sleepiness returns.

Avoid checking the time repeatedly. Knowing exactly how many hours remain before morning rarely helps you relax.

Move regularly during the day

Regular physical activity can support sleep quality, mood and stress regulation. Walking, strength training, cycling, swimming and other forms of movement can all help.

Very intense exercise close to bedtime may feel stimulating for some people, while others sleep well after evening activity. There is no need for a universal rule. Notice how timing affects you.

What matters most is finding movement that suits your health, your preferences and your life.

Make your sleep environment comfortable

A bedroom that is too warm, bright or noisy can make sleep more difficult. Where possible, create a space that is cool, dark and quiet.

This is particularly relevant during perimenopause and menopause, when hot flushes and night sweats may repeatedly interrupt sleep.

If hormonal symptoms are a major factor, support from a health coach can help you consider sleep alongside nutrition, stress, movement and your wider health.

Medical treatment decisions, including whether HRT may be appropriate, should be discussed with your own GP or menopause clinician.

Why sleep hygiene is not always enough

Good sleep habits are helpful, but persistent insomnia is not always resolved by avoiding caffeine and buying blackout curtains.

Chronic insomnia generally involves ongoing difficulty falling asleep, staying asleep or obtaining restorative sleep, together with a meaningful effect on daytime functioning.

For longer-term insomnia, cognitive behavioural therapy for insomnia, usually known as CBT-I, is considered a first-line treatment. It combines several approaches that address sleep-related thoughts, behaviours and routines rather than relying solely on medication.

NICE identifies CBT-I as the standard first treatment for long-term insomnia after initial sleep hygiene advice. NICE has also recommended certain digital CBT-I programmes for eligible adults in primary care.

This distinction matters. Health coaching can help you improve your routines, manage stress and translate lifestyle advice into practical action, but it does not replace assessment or evidence-based treatment for a sleep disorder.

When should you speak to your GP about poor sleep?

Seek medical advice when sleep difficulties have continued for several months, are significantly affecting daily life or are accompanied by other concerning symptoms.

Speak to your GP if you experience:

• Loud snoring, choking or gasping during sleep

• Severe daytime sleepiness or falling asleep unexpectedly

• Uncomfortable sensations or an irresistible need to move your legs

• Persistent low mood, anxiety or loss of interest

• Symptoms of an overactive thyroid

• Ongoing pain that disrupts sleep

• Significant night sweats without an obvious explanation

• Sleep problems that began after starting a medication

• Menopause symptoms that are affecting your quality of life

Sleeping tablets may be appropriate in some circumstances, but they are not usually the first or only solution for persistent insomnia. The NHS explains that pharmacy sleep aids may provide short-term help for one to two weeks but do not cure insomnia.

• What does a lifestyle medicine approach to sleep look like?

• A lifestyle medicine approach asks more than, “What time do you go to bed?”

• It considers what is happening across your day and your wider health:

• Are you getting natural light and movement?

• Is stress keeping your mind in a state of alert?

• Are menopause symptoms, pain or another health condition waking you?

• Are caffeine or alcohol affecting sleep quality?

• Does your schedule allow enough opportunity for sleep?

• Have you begun to fear bedtime or place increasing pressure on yourself to sleep perfectly?

As a GP and lifestyle medicine coach, I help people explore these connected factors and identify realistic changes that fit their lives.

Through one-to-one or health coaching online, we can turn general advice into a personalised plan without expecting you to overhaul every part of your routine at once.

Frequently Asked Questions

How much sleep do adults need?

Many healthy adults sleep for approximately seven to nine hours, but individual needs vary. Sleep quality, regularity and how you function during the day are also important.

Why do I wake up at 3am every night?

Night waking can be influenced by stress, alcohol, temperature, pain, menopause symptoms, sleep apnoea, medication or changes in sleep patterns. Waking briefly can also be normal. It becomes more concerning when you remain awake for long periods or your daytime functioning is affected.

Should I take melatonin?

Melatonin is not a general solution for every sleep problem, and its availability and recommended uses differ depending on age and clinical circumstances. Speak to your GP or pharmacist before using it, particularly if you take other medication or have an underlying condition.

Can menopause cause insomnia?

Yes. Hormonal changes, night sweats, hot flushes, anxiety and changes in mood can all disrupt sleep during perimenopause and menopause. However, other causes should still be considered rather than assuming every sleep problem is hormonal.

Can health coaching help me sleep better?

Health coaching can help you identify the lifestyle factors influencing your sleep and build realistic routines around stress, activity, caffeine, alcohol and winding down.

It cannot diagnose or treat sleep apnoea, restless legs syndrome or chronic insomnia.

Where symptoms suggest a medical condition or sleep disorder, you should seek an appropriate clinical assessment.

Stop chasing perfect sleep

Sleep can become more difficult when it turns into another task you feel you must perform perfectly.

The aim is not to guarantee eight uninterrupted hours every night. It is to create the conditions that make sleep more likely, understand the factors disrupting it and seek further support when self-help is not enough.

If poor sleep is affecting your energy, mood, weight or ability to cope, book a consultation with Dr Jane. Together, we can look at your sleep as part of your wider health and create a practical, personalised lifestyle medicine plan.

This article provides general health education and is not a substitute for individual medical advice, diagnosis or treatment. Please speak to your GP or an appropriate healthcare professional if sleep problems are persistent, severe or affecting your ability to function safely.