
Sleep Science
Why You Wake Up Hot (and What Actually Fixes It)
Heat buildup is the most common reason for restless sleep. Here is what causes it — and why the fix usually is not a new mattress.
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Upgrade your mattress without replacing it.
Sleep science, honest buying guides, and practical tips for getting more from the bed you already own.

Heat buildup is the most common reason for restless sleep. Here is what causes it — and why the fix usually is not a new mattress.
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Before you spend thousands replacing your mattress, run through this checklist. Most beds need an upgrade, not a replacement.
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One likes soft, one likes firm. Split firmness lets both sleepers win — here is how it works.
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