Much to our delight, mattresses have evolved from scratchy thatched mats and animal hides on the cold, hard ground to today’s plush and buoyant support systems. And now, one of the most exciting innovations of recent times has been the cooling technologies developed to offset the heat our bodies emit throughout our many hours in repose.

Research by Men’s Journal concluded that 83% of people prefer a cool room for sleeping, suggesting that quite a lot of us sleep on the warm side. A study by USA Today gathered that 39% of Boomers and nearly 65% of Millennials sleep unclothed. What this makes us think is that we are evolving more and more towards appreciating those heat-dissipating technologies. In reaction to this, engineers have come up with a few different components for mattresses that keep you feeling cooler and more comfortable throughout the night.

Some of the different methods that succeed in accomplishing this refreshing feat are air circulation and materiality. With dense materials like memory foam, air does not usually flow freely throughout, obstructing and retaining heat. One way to combat this has been by creating an open-cell structure where mattresses are made in layers of memory or gel-infused foam with tiny open-air passageways built in between. Gels are brilliant at temperature moderation because of their liquid composition, as liquid does not hold heat well. It absorbs those excess degrees from your body and releases them blissfully away via those air tunnels, as mentioned above. Other materials such as metals and minerals like carbon and copper (even pulverized diamonds!) have high thermal conductivity, making them quick to absorb heat. Many mattress companies now use textiles infused with these elements to help move unwanted body heat away from the source.

The point of all these components is to avoid trapping the heat that your own body produces, whisking it out through the open-air passageways of these new-fangled constructions. Suffice to say; we have come a long way over time.