Claire Davies (CSSC)

Managing Editor of Sleep, Certified Sleep Science Coach

As a Certified Sleep Science Coach, Claire is qualified to help people optimize their bedrooms for better sleep, and to help them develop the best sleep routine and habits, and to find the right products for their individual needs. In her role as the Managing Editor of Sleep, Claire oversees all of Tom's Guide's sleep health content, as well as our buying guides covering everything from the best mattresses to the best sunrise alarm clocks. Claire is connected to a wealth of sleep doctors, neuroscientists and charted psychologists, and loves helping readers to track down the right solutions for a comfy night's rest.

Latest articles by Claire Davies (CSSC)

Tom's Guide Sleep Concierge team image shows two of our mattress testers sitting on a luxury hybrid mattress in our sleep product testing lab

Our Cyber Monday Sleep Concierge service is live — get personalized mattress and pillow recommendations direct from our experts

By Claire Davies Published 27 November 25

Need a new mattress, pillow or bedding set but unsure where to start? Answer these six simple questions and our Sleep Concierge team will send you recommendations unique to you

Mattresses

Two women sitting on the Siena Signature Memory Foam mattress with a Tom's Guide Black Friday Mattress Deals badge overlaid

3 reasons to buy a mattress in this weekend's sales — don't wait for Black Friday

By Nicola Appleton Last updated 21 November 25

Wait for Black Friday and you'll pay the same price for your mattress and risk having to wait longer for it if it isn't out of stock. We’re calling it — now's the time to buy.

Mattresses

Nectar mattress review: The Nectar Mattress placed on a light wooden bed frame with an orange metal suitcase at the end

Nectar Mattress review: Supportive memory foam comfort for low budgets

By Claire Davies Last updated 21 November 25

Recommended

The Nectar Memory Foam Mattress promises body-hugging, cooling comfort, but does it deliver? We tested it for three months to find out...

Mattresses

The Eve Premium Hybrid Mattress photographed on a wooden bed frame as part of the review process

Eve Premium Hybrid mattress review: A firm bed for hot sleepers

By Claire Davies Last updated 21 November 25

Editor's Choice

The Eve Premium Hybrid is a TV-famous bed-in-a-box, but is it worth the price tag? Here's our thoughts are sleeping on it.

Mattresses

A woman peacefully asleep on a new mattress

A good mattress makes a big difference to how well you sleep — here's why

By Claire Davies Last updated 17 November 25

Your mattress has the biggest impact on how comfy (or not) you feel in bed, how quickly you fall asleep, how often you wake up during the night, and how refreshed you feel in the morning

Mattresses

Image is split into four squares, with each square showing a different aspect of our mattress testing process. In the top left hand corner one of our mattress writers performs an effective sleep space test on the DreamCloud Classic mattress. In the top right hand corner you can see our pressure relief weighted indentation test in process, where we are using a standardized stack of weights to measure how much the mattress indents (how well it contours) and how quickly it recovers (how responsive it is). In the bottom left hand corner another our of mattress testers lies on her side on the Saatva Classic mattress during a pressure relief test, with a digital laser projecting a straight line onto her back so we can assess how well the mattress supports spinal alignment. In the bottom right hand corner, one of our mattress testers lies on a hybrid mattress during a thermal regulation test. In the image you can see we're using a thermal imaging camera to measure how much heat the mattress absorbs and how quickly it dissipates that heat.

How we test mattresses

By Claire Davies Published 14 November 25

A complete guide to our new methodology and scoring system

Mattresses

Our mattress tester wearing black silk pyjamas laying on her back on the Birch Elite mattress on wooden bedframe in warm lit bedroom with bedside plant, chair, unit, lamp and checkred rug

Don't ignore the 9 key signs that it’s time to buy a new mattress

By Claire Davies Last updated 7 November 25

Is it time to replace your mattress? Here are nine telltale signs you need a new one — and three that you just need a new bed topper

Mattresses

A member of our sleep team lies on her side on the Nolah Original Mattress on a bed frame in a bedroom

What are mattress trials and how do they work?

By Claire Davies Last updated 4 November 25

Many mattress brands talk about their sleep trial periods, but what are they and how do they work? We have answers.

Mattresses

A woman sits cross-legged on a bed with her eyes closed and her fingers held in a meditative position.

The 'perfect, portable stress antidote' — how to use the 4 7 8 breathing method to fall asleep fast

By Claire Davies Last updated 29 October 25

Presented by Nectar

The 4 7 8 sleep method involves a simple breathing technique that's surprisingly effective against anxiety, stress and bedtime worries.

Sleep

The Military Method promises sleep in 2 minutes — but what is it?

By Claire Davies Last updated 27 October 25

How to use the two-minute Military Sleep Method to fall asleep fast and quieten a racing mind before bed.

Sleep

Testers inspect the newly unboxed DreamCloud Classic mattress.

Mattress jargon buster: Our expert glossary explains all the key terms you'll come across while bed shopping

By Claire Davies Last updated 24 October 25

Confused by all the technical talk when bed shopping? Our mattress jargon buster explains all the key terms you need to know

Mattresses

A woman in a khaki green sleeveless top holds a white colander full of freshly washed raw spinach, a magnesium rich food that has multiple benefits to a person's health and sleep

I take magnesium for better sleep, but can a varied diet deliver the same results? I asked three dieticians

By Claire Davies Published 8 June 25

I’m considering ditching my magnesium glycinate supplement after adding more seeds, greens and beans to my diet. Here’s why…

Sleep

A woman with dark brown hair lies on her side staring at the back of a white alarm clock that shows the time as 2.30am

3 sleep hygiene tips that got me back on track after endless nights of being unable to sleep

By Claire Davies Published 13 April 25

These aren’t quick fixes, but they could help break you out of a sleep rut

Sleep

Two delivery men unload a white mattress from their van as part of a White Glove Delivery service

Mattress White Glove Delivery: What's included and how it works

By Claire Davies Last updated 11 April 25

We explain everything you need to know about mattress White Glove Delivery, including which brands offer it.

Mattresses

Simba vs Emma mattress: image shows the Emma Original on the left and the Simba Hybrid on the right

Simba vs Emma: Which boxed mattress should you buy?

By Claire Davies Last updated 10 April 25

We compare the Simba Hybrid Essential vs Emma Hybrid Original mattresses to decide which is better for your sleep and budget

Mattresses

A man sits on a mattress on the floor placed on a hardwood floor so it sleeps cooler

5 reasons not to put a mattress on the floor — and 3 reasons why you should

By Claire Davies Last updated 21 March 25

Can you put a mattress on the floor? From mold to bed bugs, there are plenty of reasons not to, but some big benefits too.

Mattress Care

A woman with long dark hair falls asleep quickly in a comfy bed dressed with soft white linens

‘How do I fall asleep quickly?’ The top 3 tips I’ve learned as a sleep coach and ex-insomniac

By Claire Davies Published 16 March 25

Presented by Helix Sleep

How I went from struggling to fall asleep to dropping off in ten minutes or less

Sleep

Intrusive thoughts keeping you awake? Try this ER doctor ‘brain hack’ to fall asleep quickly

By Claire Davies Published 13 March 25

Presented by Helix Sleep

Cognitive shuffling for sleep is Dr Joe’s number one technique when intrusive thoughts strike

Sleep

Trouble sleeping? 5 things in your bedroom that could be sabotaging your sleep

By Claire Davies Last updated 11 March 25

Presented by Helix Sleep

How many of these sleep saboteurs are in your bedroom?

Sleep

I’ve been sleep deprived for over two years — my three top tips for easing symptoms

By Claire Davies Published 19 January 25

I’m a sleep coach dealing with longterm sleep deprivation. Here’s what I do day-to-day to reduce my symptoms of brain fog, fatigue and irritability…

Sleep Problems

A man with short and curly brown hair sleeps peacefully on his side in bed

I’m a sleep coach — my 3 best tips for better sleep this World Mental Health Day

By Claire Davies Published 10 October 24

Good quality sleep boosts your mental health. For World Mental Health Day 2024, I’m sharing the three best tips I’ve learned for better sleep.

Sleep

A young couple unbox and move a new memory foam mattress they bought from Amazon during the prime day deals event

How to spot a good Prime Day cheap mattress deal

By Frances Daniels Published 12 July 24

Plus, the three best budget mattress sales to shop now, with prices from $137.

Mattresses

Sleep Awareness Week 2024 images shows a woman with wavy dark hair sleeping on side in a white bed

Sleep Awareness Week 2024 — how to become your 'best slept self' this year

By Claire Davies Last updated 16 March 24