Frances Daniels is a PPA-accredited journalist and Sleep Staff Writer at Tom's Guide with an MA in Magazine Journalism from Cardiff University. Her role includes covering mattress and sleep news and writing sleep product reviews and buyer's guides, including our Best Hybrid Mattress 2025 guide. She is interested in the relationship between sleep and health, interviewing an array of experts to create in-depth articles about topics such as nutrition, sleep disorders, sleep hygiene, and mattress care. She is also our specialist on mattress toppers — producing bed topper reviews and taking care of our Best Mattress Toppers 2025 guide — and leads content relating to fiberglass-free beds for a non-toxic sleep. Outside of Tom's Guide, she has written for Ideal Home and Marie Claire.
Latest articles by Frances Daniels

I get 6 hours of sleep a night, but is that enough? I asked a board-certified doctor — here’s what he said
By Frances Daniels published
What my Apple Watch tracking data reveals about my 6 hours sleep a night, and the benefits of 7+ hours sleep, according to a doctor.

The 15-minute sunlight rule ended my morning energy slump and brain fog — and it can increase energy levels by 20%, doctors say
By Frances Daniels published
I spoke to 4 doctors, including clinical psychologists and a double-board certified psychiatrist, to learn why my 15-minute morning habit reduces my daytime fatigue.

Is glycine or magnesium better for deep sleep? 2 board-certified doctors respond
By Frances Daniels published
I've been swept up in the hype around glycine gummies and magnesium strips, but are they actually boosting my deep sleep? Here's what board-certified doctors told me...

These 5 Apple Watch sleep settings are vital for 'lab accuracy,' doctors say
By Frances Daniels published
I asked two board-certified sleep doctors the 5 most important hidden settings on my new Apple Watch to improve my sleep.

3 key Apple Watch settings I’m using to get more sleep and hit the longevity boosting 7:1 Sleep Rule
By Frances Daniels last updated
I'm bagging a '92' Apple watch score for just 6 hours of slumber, but a 7-hour sleep goal is key for boosting longevity. Here's how I’m using the watch to sleep longer and consistently

Share a bed with your cat or dog? Experts share the 3 things you need in your emergency cleaning kit to get pet pee out of a mattress
By Frances Daniels published
Experts reveal the three mattress cleaning essentials you need close by in case your pet has an accident

Beat 3 a.m. wake ups with these 5 Nordic sleep hacks — No 1 can add nearly an hour of extra sleep to your night
By Frances Daniels published
Why Nordic habits can add an extra 55 minutes of sleep, stop 3 a.m. wake ups, and help you wake up with energy

This 5-minute bedtime trick provides instant back pain relief for better sleep, says chiropractor
By Frances Daniels last updated
A chiropractor explains how adding the beginner friendly cat-cow stretch to your nighttime and morning routine can reduce back pain and improve sleep

Thinking of buying your next mattress online? 4 reasons why you should — and the 2 teeny drawbacks to consider
By Frances Daniels published
35% of all mattresses sold last year were bought online versus 23% the year before, so you won't be alone in your online bed browsing

Always tired? Experts share 5 signs that your mattress is to blame and how to fix it
By Frances Daniels published
The wrong mattress might be why you're exhausted every morning — experts share the most common signs you need a new bed.

I sleep less than 7 hours a night and didn't think it was an issue until a recent study said otherwise — an expert explains more
By Frances Daniels published
I function well on around six hours a night, but now I'm wondering if I should try to sleep more and, if so, how?

I asked ChatGPT and a board-certified sleep doctor what the 'perfect' nighttime routine looks like — here's the clear winner and why
By Frances Daniels published
I asked a (human) sleep doctor and AI to create me an ideal nighttime routine — this is the one who actually gave me good advice

'Your body has a physical ‘memory’' — doctors share the 5 reasons why I found it impossible to sleep over the holidays
By Frances Daniels published
Doctors share the 5 reasons why I found it impossible to sleep over the holidays

"Don't lose three hours by endlessly scrolling through social media," 5 key sleep hygiene habits of highly successful people and how they help you sleep for longer after just one night
By Frances Daniels last updated
Some of the most successful people in the world, from CEOs to world leaders, share these five sleep habits

Dermatologists reveal the gross reason why you should wash your new Christmas pajamas before wearing them — especially if you have this condition
By Frances Daniels published
Thinking of wearing your brand new Christmas pajamas without washing them first? Skin experts are urging you to think again for this health reason

Sleep Survival Kit: 12 products to help you sleep well in the busiest of houses this holiday season
By Frances Daniels published
Noisy relatives? Here's what can help you sleep cozy and uninterrupted this Christmas — including a cheaper-than-Black-Friday white noise machine

No, hot chocolate isn't good for sleep — health expert explains why you should swap it for this 'golden' drink instead
By Frances Daniels published
Hot chocolate is the quintessential cozy beverage, but a dietician tells us it's not so good for our sleep...

Doctor warns this common food is wrecking our sleep — and we eat over 30lbs of it a year
By Frances Daniels published
This popular nutritious ingredient is surprisingly disruptive to your sleep, according to experts. Here's why and what to eat instead...

I'm a mattress topper expert — my top 5 tips for getting a good deal this Black Friday
By Frances Daniels last updated
Looking for a mattress topper this Black Friday? Here's a quick guide to finding a good deal in the sales

Beginner’s guide to Black Friday mattress deals — 5 key things to remember before you shop
By Frances Daniels last updated
The Black Friday mattress deals have landed — but before you shop, follow our guide to the 5 things you should know

An expensive mattress isn't always best — meet the cheap memory foam bed that outperformed many luxury rivals in our testing
By Frances Daniels published
We've tested and re-tested the Siena Signature Mattress, and this budget memory foam impressed in these three benefits...

Saatva’s best-selling mattress topper isn’t in the Black Friday sale — so I’d buy this cheaper alternative instead
By Frances Daniels published
There’s no Black Friday deal on the popular Graphite Memory Foam Mattress Topper, so save up to $70 with this cheaper option from the brand instead

What is gel-foam in mattresses?
By Frances Daniels last updated
Gel-foam mattresses are different to pure memory foam mattresses — here’s what you should know and whether you should buy one.
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