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Sleep and Exercise: How Sleep Builds Muscle and When to Train
Growth hormone is released mainly in deep sleep, which makes the night part of the training plan. How sleep builds muscle, what short sleep costs, and whether evening workouts hurt sleep.
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Is Your Mattress Aging You? The Link Between Sleep Quality and Skin Health
Last updated: September 2026 "Beauty sleep" gets said with a wink, but the biology underneath it is real: skin does most of its repair while you are in deep sleep, and anything that cuts that repair window short shows up on your face first. Your mattress sits at the start of that chain, which is worth taking seriously before spending on serums that sit at the end of it. Quick answer: Yes, a mattress can age your skin, indirectly but measurably: a bed that breaks your sleep raises cortisol, the hormone that breaks down collagen and elastin, while cutting the deep sleep in which growth hormone repairs skin cells. An old mattress adds a second route, because built-up dust mites and allergens irritate skin directly. The fixes are the NHS's 7 to 9 hours on a supportive, breathable mattress, washed bedding, a washable protector, and replacing the mattress at around 7 to 8 years. Does sleep really affect how you look? Yes, and it has been tested directly. In a Karolinska Institutet study published in the BMJ, Axelsson and colleagues photographed 25 people twice, once after two nights of full sleep and once after sleep restriction, and had strangers rate the photos: the sleep-deprived versions were rated less healthy and less attractive. The tired face people talk about is visible to others, not just to you in the mirror. The mechanism runs on two hormones. Short or broken sleep keeps cortisol high, and cortisol breaks down the collagen and elastin that keep skin firm, while also promoting the low-level inflammation that makes skin look dull and puffy. Meanwhile growth hormone, which drives cell and tissue repair including skin, is released mainly during deep slow-wave sleep, so losing deep sleep means losing repair time. Good sleep flips both switches the right way. How can a mattress age your skin? Two routes. The first is through sleep quality: a mattress that sags, aches at pressure points or runs hot wakes you or keeps you in lighter sleep, and it is precisely the deep, repair-heavy sleep that gets squeezed out. You can lie in bed for eight hours and still shortchange your skin's night shift. The second is direct contact. A mattress accumulates dust mites, dead skin and allergens over years, and for many people that means irritation, congestion and disturbed sleep on top; our guide to dust mites in your bed covers how quickly it builds up. If your mattress is past 7 to 8 years old or visibly dipping, it is likely doing both jobs badly, and our guide on when to replace a mattress will tell you whether it is time. What does beauty sleep actually mean? It means the first half of the night, when deep slow-wave sleep is concentrated and the skin's repair work happens: growth hormone pulses, cell turnover, collagen rebuilding. Dark circles and morning puffiness after a short night are the visible receipts of missing that window, and a run of short nights compounds it. Royalty took the adjacent point seriously: Queen Elizabeth II reportedly had her mattresses replaced every five years. You do not need the royal schedule, but the principle that the bed itself is part of the regimen is sound, and it is cheaper per night than most skincare. How do you protect your skin while you sleep? Start with the hours: 7 to 9 a night, per the NHS, kept to a consistent schedule. Then the surfaces: wash pillowcases and sheets weekly, since they hold oils and allergens against your face for eight hours at a stretch, and use a washable mattress protector so the mattress itself stays clean underneath. A cool, aired room helps twice, because overheating both fragments sleep and aggravates skin. The REM-Fit 500 Silent Tencel Cool Mattress Protector, a Good Housekeeping Winner 2026, is the low-effort version of that advice: a breathable, machine-washable Tencel barrier between you and the mattress that keeps the sleeping surface fresh without the crinkle of old-style protectors, and buying one with a mattress extends the trial to 200 nights. REM-Fit 500 Silent Tencel Cool Mattress Protector A breathable, machine-washable Tencel layer that keeps your sleep surface clean and cool: the simplest skin-friendly upgrade a bed can get. Shop the Tencel Cool Protector ✓ Good Housekeeping Winner 2026✓ Machine washable✓ Free UK delivery Which mattress is best for skin health? One that is supportive enough to hold deep sleep, breathable enough to stay cool, and hypoallergenic. Every model in our hybrid mattress range is built that way: tall pocket springs whose airy core lets the mattress breathe, under open-cell memory foam that moves heat and moisture away from you, with hypoallergenic covers. The tension choice is about your sleeping position rather than your skin; our firmness guide covers that decision. Sleep and skin FAQs Last updated: September 2026 Can a mattress really affect your skin? Yes, in two ways: by breaking the deep sleep in which growth hormone repairs skin, and by holding years of dust mites and allergens against you every night. A supportive, breathable, clean mattress addresses both routes at once. Does lack of sleep cause wrinkles? It accelerates them. Poor sleep keeps cortisol high, and cortisol breaks down the collagen and elastin that keep skin firm, while lost deep sleep means lost overnight repair. A BMJ study found strangers could see the difference, rating sleep-deprived faces as less healthy and less attractive. What is the best mattress type for skin health? A hypoallergenic, breathable, pressure-relieving one, which in practice means a hybrid with open-cell foam and a washable protector on top. Supportive enough to keep you in deep sleep, cool enough not to wake you, and clean at the surface. How often should you wash bedding for your skin? Pillowcases and sheets weekly, the protector monthly or per its care label, and the duvet a few times a year. Your pillowcase touches your face for around 50 hours a week, which is more than any skincare product you own. Is beauty sleep real? Yes. Skin repair is concentrated in deep slow-wave sleep, mostly in the first half of the night, when growth hormone is released and collagen rebuilding runs. Seven to nine hours on a consistent schedule is the treatment; everything else supports it. Sources: Axelsson et al., Beauty sleep: experimental study on the perceived health and attractiveness of sleep deprived people, BMJ, 2010; NHS, Sleep and tiredness.
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Sticking to New Year Resolutions with Better Sleep
As the New Year begins, many of us set ambitious goals to improve our health, fitness, productivity, and overall well-being. Yet, by the time February rolls around, it’s not uncommon to find those resolutions slipping away. One key to turning those good intentions into lasting habits? Better sleep. Here’s how prioritising sleep can help you stick to your New Year resolutions and why having the right mattress plays a vital role. The Connection Between Sleep and Success Sleep isn’t just a time for your body to rest; it’s when your brain consolidates memories, processes emotions, and recharges your physical energy. When you’re well-rested, you’re more likely to: Stay motivated: Lack of sleep can lead to decreased willpower and increased cravings, making it harder to stick to healthy eating or exercise plans. Be productive: Sleep enhances cognitive function, helping you stay focused on your goals. Maintain emotional balance: Adequate sleep reduces stress and irritability, making it easier to stay positive when challenges arise. Without proper sleep, even the best-laid plans can falter. That’s why improving your sleep quality should be a cornerstone of your resolution strategy. Tips for Better Sleep in the New Year Set a Consistent Sleep Schedule: Aim to go to bed and wake up at the same time every day, even on weekends. This helps regulate your body’s internal clock and improves sleep quality. Create a Relaxing Bedtime Routine: Engage in calming activities like reading, meditating, or taking a warm bath before bed to signal to your body that it’s time to wind down. Limit Screen Time: Blue light from phones, tablets, and laptops can disrupt your sleep cycle. Try to turn off screens at least an hour before bed. Optimise Your Sleep Environment: Ensure your bedroom is cool, dark, and quiet. Consider blackout curtains, white noise machines, or earplugs if necessary. Invest in the Right Mattress: A comfortable and supportive mattress is essential for quality sleep. If you’ve been waking up with aches and pains or tossing and turning at night, it might be time to replace your mattress. The Role of the Right Mattress Your mattress is the foundation of your sleep environment. A mattress that doesn’t suit your body or sleeping style can lead to restless nights and poor sleep quality, which can derail your efforts to stick to New Year's resolutions. Here’s what to consider: Support: Look for a mattress that supports your spine and keeps it aligned. This reduces the risk of waking up with stiffness or discomfort. Comfort: Whether you prefer a soft, medium, or firm mattress, the key is finding one that feels right for you and helps you relax. Durability: A high-quality mattress will maintain its shape and support for years, ensuring you get consistent sleep night after night. At REM-Fit, we understand the importance of good sleep for achieving your goals. Our range of innovative mattresses is designed to cater to different sleep preferences, offering the perfect balance of comfort and support. Whether you’re looking to improve your fitness, boost your productivity, or simply feel better every day, the right mattress can make all the difference. Make 2025 the Year of Better Sleep This New Year, don’t just focus on the resolutions you want to achieve; think about the foundation that will help you achieve them. By prioritising better sleep and investing in a high-quality mattress, you’ll set yourself up for success in every area of your life. Ready to take the first step? Explore our range of mattresses and find the perfect match for your sleep needs. Here’s to a well-rested, resolution-crushing 2025!To learn more about how REM-Fit can help you achieve better sleep, please email us at sales@rem-fit.co.uk.
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