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Do you sleep hot? Why temperature affects your sleep


Have you ever woken up in the middle of the night drenched in sweat, clothes half off only to spend the next half hour tossing and turning in a pool of your own perspiration? Gross, right? Maybe you find yourself in the nightly dilemma of wanting to pile on all the blankets (because who could ever fall asleep so exposed), only to kick them all off because they are suffocating you. Don’t worry. We’ve all been there.

Even if you don’t suffer from being a hot sleeper, you’ve likely experienced a similar late-night sweat sesh when you’ve had a fever. What is it about not being able to sleep when you are hot?

Believe it or not, temperature has one of the biggest impacts on our sleep quality. At nighttime our core body temperature naturally drops one to two degrees. This loss in body heat helps you fall and stay asleep – hence, why you struggle falling asleep in warmer environments.

According to sleep experts, the best temperature for sleep is 65 to 68 degrees Fahrenheit. If this sounds far too cold for you, don’t panic. You can still cuddle up in your blankets.As long as just the tip of your head is exposed to the cooler air, your body will remain at the ideal sleeping temperature.

If adjusting the thermostat isn’t enough to keep the night sweats at bay, here are five ways to stay cool when sleeping:

Find a cooling mattress

If you are a hot sleeper, you are always looking for ways to sleep cooler. That starts with your mattress.

If the mattress you have now feels like it’s turning your body into an inferno, it’s time to swap that old model for one designed for better air circulation and breathability. Your sleep is golden, and any mattress that doesn’t help you keep your cool the whole night through is robbing you of that deep, restorative sleep we all need.

The materials in your mattress have the biggest impact in determining how cool it sleeps.  The more breathable your mattress materials, the better your mattress will be at allowing air in, out, and away from your body.

In the past, memory foam mattresses got a bad rap for trapping body heat. But contrary to popular belief, not all memory foam mattresses sleep hot. In fact, there have been huge improvements in the engineering of foam mattresses to promote airflow and heat transfer.

Blello’s Serene® foam is a great example of innovation in the industry. Serene foam is a memory foam alternative that is temperature neutral and dissipates heat faster than traditional memory foam. If you are looking for a cool bed, Blello is one to check out.

Be picky about your sheets

Your mattress isn’t the only culprit for trapping heat. Consider your bedding accessories too. If you find yourself kicking your sheets off every night, that may be a sign you need to look for something new.

You’ll want to:

  1. Choose natural fibers -Sheets made from organic materials are naturally breathable and wick away moisture from the body. Not to mention, they are better for the environment.
  2. Consider the weight – You’d think lightweight sheets made of materials like sateen or silk would be cooler, but it turns out they are actually more insulating because they drape to your body. Although, percale sheets are heavier, they actually allow for more circulation.
  3. Ignore the thread-count- We seem to believe the higher the thread count the more luxurious the sheet. And although it’s valid you want to sleep like royalty, a higher thread count means less room for air to flow through.

Learn how to keep your room cool year round

There are ways to keep your room cool other than turning down the AC. Besides, whether you live at home or alone, you probably hear your dad’s voice commanding, “You better not touch that,” every time you approach the thermostat.

Instead you can:

  •  Keep the ceiling fan on high
  • Drape thick curtains to block out heat from the sun
  • Let the night air in (maybe save this one for the fall – otherwise, your dad will haunt you. According to him, if you open the window while the AC is on, you might as well just burn money.

Wear lightweight pajamas (or nothing)

If you are waking up only to find the clothes you went to bed in on the floor, you might as well just leave them off. No shame, nearly half the population is sleeping in the nude.

But if that makes you uncomfortable, at least invest in a cooler pair of PJs. Materials such as bamboo visco, linen and even plain old cotton are good at wicking moisture away from your body.

Help your body reach the perfect sleeping temperature

Like we mentioned before, your core body temperature must drop a few degrees for you to fall asleep. A couple ways to assist in dropping your body temp include taking a warm bath about an hour before bed or working out in the evening. Both these activities cause an increase in body temperature followed by a rapid drop. This drop in temperature is said to help you experience longer and deeper sleep.

If you’ve spent a lifetime identifying as a “hot sleeper,” a mattress that helps you consistently sleep cooler isn’t just a game-changer, it’s a life-changer. Imagine waking up every morning feeling refreshed, relaxed, and recharged — without sweaty feet, a clammy back, or a damp pillow. Take charge of your sleep health with these tips for staying cooler at night.

Visit Mattress Advisor for more information on finding the best mattress or to see our review of the Blello mattress.

*Serene® is a registered trademark of Carpenter Co

How to Buy a Mattress Online: Your Guide to Types, Factors, Sizes & More

how buy mattress a online

Ten years ago, buying a mattress online would have sounded crazy. How would you test it? And how would it be delivered to your home? The practicality of the matter would have seemed impossible back then. But the past few years have brought a shakeup to the industry, with dozens upon dozens of online mattress companies popping up.

We know the market has become a bit overwhelming for consumers. There are almost too many online mattress companies to choose from, which means making a decision is nearly impossible. And when you finally do select a mattress, how will you know it’s the right one for your sleep preferences when the box shows up at your door?

Knowing how to buy a mattress online is the first speedbump to pass over. Since you can’t test it in a store, you need to understand exactly what you’ll be ordering. This online mattress buying guide will help you figure out:

  1. Do You Need a New Mattress?
  2. What Size Mattress Do You Need?
  3. What Mattress is Best for Your Sleep Style?
  4. What Sleep Factors Should You Consider?
  5. What Type of Mattress Should You Buy?
  6. What is Your Budget?
  7. Where Should You Buy From?

Do You Need a New Mattress?

Before spending your time researching and your money purchasing, think about if you really even need a new mattress. There are usually three main reasons why you’d need to replace your mattress:

You’re Moving

Whether you’re transferring across town or across the country, moving is a great time to consider your relationship with your mattress. Since you’ll be packing all of your things up anyway, buying a mattress online that can be delivered right to your door can be one less thing you need to worry about.

Your Mattress Has Become Uncomfortable

How have you been sleeping lately? If you’re waking up in pain or have trouble falling and staying asleep, it might be time to switch out your mattress. This can also be the case if you have a chronic injury, like back pain.

Your Mattress is Old

A good indication that it’s time for a new mattress is when you consider its age. Here’s a breakdown of how long mattresses typically last, based on their components:

  • Memory foam and hybrid mattresses: 10 years
  • Latex mattresses: 12 years
  • Innerspring mattresses: 8 years
  • Pillowtops: 8 years

Ultimately, if you’re not getting a good night’s sleep and are waking up in pain, it might be time to start looking for a new mattress regardless of its age.

What Size Mattress Do You Need?

Once you’ve determined that you do need a new mattress, the next question is which size to choose. It’s likely that you have a size you’ve become happy with, but if your living arrangements are changing or you are having comfort issues, take into consideration the following:

Twin Mattress – 39″ x 75″ x 10″

The smallest mattress size, Twins are usually a good choice for kids transitioning to bigger beds.

Twin XL Mattress – 39″ x 80″ x 10″

This is a popular size mattress for college dorms, offering an extra 5” of length compared to the Twin.

Full Mattress – 54″ x 75″ x 10″

Full-sized mattresses are best for single sleepers, usually young kids or teenagers. Since these mattresses are only 75” long, they might not offer enough leg room for some adults.

Queen Mattress – 60″ x 80″ x 10″

Queen mattresses are ideal for small master bedrooms. Couples who like to sleep close or single sleepers who like spreading out at night will enjoy this size.

King Mattress – 76″ x 80″ x 10″

This is the best choice for partner sleepers who want a lot of personal sleeping space or for those who share their bed with pets and kids.

California King Mattress – 72″ x 84″ x 10″

For those over 6’ tall, the Cal King is 4” longer than a regular king mattress!

If you’re moving to a new space, it always helps to break out the measuring tape and make sure you choose a mattress size that will fit comfortably in your room.

What Mattress is Best for Your Sleep Style?

The way you sleep at night is going to determine the firmness level, material and support you need in the mattress you buy online.

Side Sleepers

Side sleepers need a mattress that relieves pressure on their shoulders and hips. Usually, a slightly softer mattress that allows a bit of sink is best.

Back Sleepers

Very stiff or firm mattresses will push too hard against the spine for back sleepers, and a mattress that’s too soft won’t provide enough support. A foam mattress will be the one to go with.

Stomach Sleepers

Stomach sleepers need a mattress that won’t sink, so a firm mattress will be better than a soft one.

Combination Sleepers

Most people move during the night, so this is usually the most common sleep style. Combination sleepers need a mattress that can handle a lot of movement and reduce motion transfer so partners aren’t disturbed. A foam mattress is the ideal choice here as well.

What Sleep Factors Should You Consider?

When it comes to sleep factors like comfort and support, don’t think of them as opposites. A supportive mattress can have soft or firm comfort levels and a firmer mattress doesn’t necessarily mean it’s more supportive.


Mattress support is all about keeping your spine aligned. Supportive mattresses should be able to evenly distribute your weight throughout the night. A lack of support can lead to back pain, muscle fatigue and an overall crummy sleep experience.


Comfort is the initial feel of the mattress and is ultimately what helps you drift off to sleepy town. The comfort level will be entirely up to your personal preference of whether you like a soft or firm mattress.


Cooling technology and breathability will also impact your comfort. If you tend to sleep hot, a memory foam mattress is going to be unpleasant since they have a reputation of trapping heat. Temperature-neutral layers, like Serene® Foam, will be the material to go with if you’re choosing to buy a foam mattress online.

What Type of Mattress Should You Buy?

The technology and materials used to create mattresses today is lightyears beyond where it was even a few years ago. This is good news and bad news. It’s good because that means there’s a material for every type of sleeper, but it’s bad news because that means there’s more options to consider. Here’s a breakdown of the main types:

Spring Mattresses

Using rows of coil springs as the main support structure, spring mattresses can incorporate various types of coils that can affect the overall comfort. These mattresses also use types of foams or other fabrics to ease the supportiveness of the coils.

Latex Foam

Latex mattresses are available in natural, synthetic and blended varieties. These mattresses can offer a high bounce level but if you have allergies to rubber, latex won’t be for you.

Memory Foam

Memory foam is man-made, constructed of polyurethane (poly) and other added materials. These mattresses have impressive pressure relieving abilities, but have a reputation for trapping heat.

Poly Foam

This type of foam is also made of polyurethane. Air is able to pass through the cells of the foam to create a comfortable, contouring mattress.

Hybrid Mattresses

Some mattress manufacturers incorporate a combination of latex foam, memory foam, springs and other materials, classifying them as hybrids.

What are the major differences between foam and spring mattresses? Check out this article for a quick breakdown.

The Color of the Outer Cover

Whatever type of mattress you choose to buy online, pay attention to the color of the outer-cover. If you’re planning on using white bedsheets, you won’t want to see a brightly colored top layer through your sheets! Make sure you select a mattress with a white or neutral-colored top.

What is Your Budget?

The new mattress you buy online will be something you use every single day, so it’s not an area where you want to be frugal. With that said, it’s also not very reasonable to pay thousands of dollars for something that is modestly constructed and less comfortable than lower priced alternatives.

When buying a mattress online, you can spend anywhere from $500 to over $1,200. But if you’re buying a mattress at a retail store, you could pay a lot more than that, depending on the type you choose. This is because retail shops need to inflate prices to account for the costs of production, the showroom, salesperson commission, delivery and other factors. But when you buy a mattress online, you remove the middleman and significantly cut down costs.

Make sure you consider these factors when you’re determining the budget for your online mattress purchase:

  • Pricing will vary from brand to brand. One company might charge more than another that is promoting the same exact product.
  • Density and thickness of the foams will also affect cost. The higher the density and thicker the foam, the more the mattress will cost. Features of the foams will also affect the price.
  • Price isn’t a direct reflection of quality. This can be said for all things in life, but it’s especially true when it comes to the materials in your mattress.
  • The bigger size the mattress, the higher your budget should be. Avoid having Cal King preferences on a Twin XL budget!

Where Should You Buy From?

That’s the ultimate question! As we’ve mentioned, when it comes to buying a mattress online, there are almost too many places to choose from. To narrow down your options, use the following tips while researching how to buy a mattress online:

  • Check for Risk-Free Trials: Since you can’t test it before you buy it online, most online mattress companies offer some kind of risk-free trial. Still, you should never assume one is available.
  • Verify Shipping Locations: Make sure they can ship to your state; some can only deliver to the 48 contiguous U.S. states.
  • Look at Return Policies: Many companies say they offer free returns, but if they don’t have a connection in your area to pick up the mattress, disposal could ultimately fall on your shoulders.
  • Read Reviews: Check all reviews, including on the company’s website, Facebook, Google and any other review site where they are listed. Read the bad and the good for a holistic view. Also see how the company responds to reviews. This will give you a sense of how they approach their customer service.
    • Trust reviews from people who have slept on the mattress for at least 30 days. It takes about that long to get used to a new mattress. People reviewing mattresses in the first few days are reviewing too early and not letting their body adjust to the mattress first, so their reviews may be premature.
    • Don’t let the number of reviews fool you. Thousands of reviews just means that thousands of people have tested the mattress. It doesn’t mean that number of people loved the mattress!
  • Review the Company’s Educational Materials: The online mattress company might have a unique place or view in the market, which they should explain on their website. Check out their blog or any resource pages for this information.
  • Make Sure They Are an Honest Company: Are they promoting a soft mattress, but all the reviews say it’s way too firm? Also, be wary of companies stating that their mattress is “universally comfortable.” There’s no such thing since everyone sleeps differently!
  • Consider Charitable Donations: If charity is something you’re interested in, a lot of companies make donations for every sale to certain non-profits. You can likely buy a mattress online from a company who will donate to your favorite one.

We hope this guide on how to buy a mattress online helps you evaluate your options! If you have any questions about Blello’s materials or if it’s the right mattress for you, let us know!


*Serene® is a registered trademark of Carpenter Co.

Foam vs. Spring Mattresses: The Great Debate, Explained

foam vs spring mattress

When it comes to foam vs. spring mattresses, deciding which is best is like asking if dogs are better than cats — it all depends on your individual preference! Both are great options, but one might irritate your allergies, make you uncomfortable or disturb your sleep.

Before making a decision, you need to do your research – especially if you’re ordering a mattress online. The better you get to know your next mattress before pulling out your wallet, the better your sleep will be!

Here is a quick breakdown of foam vs. spring mattresses to help you make the right decision.

Spring Mattresses

Innerspring mattresses use rows of coil springs as the main support structure. These coils make up the core of the mattress, and are covered by top and bottom fabric layers. These layers help add cushion and soft texture to the sturdiness of the coils.

Many people don’t know that there are actually several different types of coils that can be used. The three main options include:

  • Continuous Coils
    • The coils in this type of spring mattress are S-shaped and made from one long wire. The interlinking of this coil system can provide a stable structure.
  • Pocket Springs
    • Most spring mattresses have coils that are wired together, but pocket spring mattresses include individually wrapped coils. This makes it possible for each pocket of coils to act independently and respond quickly to movement.
  • Bonnell Springs
    • These springs are shaped like an hourglass, and are connected to each other. This can provide a great deal of support, but also means that motion transfer can be an issue.

Since sleeping directly on top of coils would be incredibly uncomfortable, spring mattress brands add foam layers for added comfort, making this another area where they can differ.

Spring Mattress Pros and Cons


  • There isn’t a “new car smell” to a spring mattress like with foams. This means no airing out is necessary.
  • Spring mattresses will stay temperature neutral. If you are prone to night sweats or just tend to sleep hot, this can be a great benefit.


  • Since the springs give the mattress a bounce, motion transfer at night is noticeable. If you sleep with a partner or even a fidgety pet, you might be disturbed if they move.
  • The open space between the springs can create a nest for dust mites, which can possibly affect your allergies and overall health.
  • If you’re buying a spring mattress in a retail store, you’ll likely experience some high-priced markups that lead to shockingly high price tags.

Foam Mattresses

When you’re making a sandwich, how do you put together your ingredients? Bread, cheese, veggies then meat? Or bread, meat, veggies then cheese? And what kind of bread do you use? The construction of foam mattresses can vary just as much as these options.

Every brand on the market has a different structure of diverse foams, all with varying levels of weight and density that offer certain features. The three main types of foam mattresses include:

  • Latex Foam
    • Latex mattresses can come in all natural, synthetic or blended varieties. There is usually a high bounce level with these types of mattresses.
  • Memory Foam
    • This is a man-made foam constructed of polyurethane (poly) and other added materials. Memory foam is well-known for its contouring abilities.
  • Poly Foam
    • In high-density foams, air can pass easily through the holes in the cells, resulting in comfortable padding. This type of foam is also made of polyurethane.

Two of the most widely used foams are latex and memory foam. Most foam mattress manufacturers also incorporate a high-density poly foam, which has a strong cell structure and high durability.

Foam Mattress Pros and Cons


  • Foam mattresses can contour better to the body while also reducing pressure on critical areas.
  • The structure of most foams can control motion transfer, which means you can sleep undisturbed.
  • The reduced compression within the foam prevents sunken spots, so your mattress will stay supportive.


  • If you’re most familiar with sleeping on a spring mattress, foam might sleep hotter to you at first. You’ll just need some time to adjust.
  • The components of the foam layers may give off an odor at first, but this diminishes quickly.
  • Latex mattresses can be a problem for people with allergies to rubber. However, Qualatex™ Foam can be used instead of latex and doesn’t run a risk of affecting your allergies.

Some foams, like memory foam, are known to be incredibly temperature sensitive. But many new foams, like Serene® Foam, use cooling technology to help you avoid sleeping hot.

CertiPUR-US® Certification

When you’re looking at your foam mattress options – no matter the type – there is one area not to overlook: Make sure the brand you select is CertiPUR-US® certified! This will verify that the foam in the mattress is:

  • Made without ozone depleters
  • Made without PBDEs, TDCPP or TCEP (“Tris”) flame retardants
  • Made without mercury, lead and other heavy metals
  • Made without formaldehyde
  • Made without phthalates regulated by the Consumer Product Safety Commission
  • Low VOC (volatile organic compound) emissions for indoor air quality (<0.5 parts per million)

Foam vs. Spring Mattresses

The biggest difference between foam and spring mattresses is the construction of the interiors. Every mattress brand believes they have figured out the perfect combination of materials to promote a healthy sleep system. While they all may have their benefits, the perfect combination will ultimately be up to you!

In the foam vs. spring mattress debate, we (of course) are on team foam. That’s because Blello is made of three foam layers: 1.5” of Response Foam, 2.5” of Comfort Foam and 6” of Support Foam. To learn more about each layer, visit our mattress page or contact us with any questions!


*Qualatex™ is a trademark of Carpenter Co.
*Serene® is a registered trademark of Carpenter Co.