If you’ve ever wondered why some nights feel more refreshing than others, you’re about to learn the secret. Sleep isn’t just one long stretch of unconsciousness — it’s a finely tuned biological performance, with each stage playing a role in how you feel, think, and perform.
Let’s break it down into bite-sized lessons you can actually use tonight.
Lesson 1: Sleep Cycles — The 90-Minute Rule
Your sleep happens in cycles lasting roughly 90 minutes. Each includes:
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Light Sleep: Your body relaxes, but you can still wake easily.
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Deep Sleep: Physical repair and recovery occur.
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REM Sleep: The brain processes memories, emotions, and creativity.
Pro Tip: Try scheduling your wake-up at the end of a 90-minute cycle (e.g., 6, 7.5, or 9 hours). You’ll wake feeling more refreshed.
Lesson 2: The Circadian Rhythm — Your Internal Timekeeper
This 24-hour rhythm responds to light, temperature, and routine.
When synced, you fall asleep easily and wake naturally. When misaligned, you fight grogginess and restless nights.
Ways to reset it:
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Morning sunlight exposure
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Consistent bedtime
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Avoiding screens before bed
Haven mattresses are made with natural, breathable materials that work with your body — not against it — helping maintain ideal sleep temperatures that keep your rhythm in sync.
Lesson 3: The Power of Deep Sleep
Deep sleep is non-negotiable for physical restoration.
During this stage:
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Growth hormone is released
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Tissue repairs
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Immune function strengthens
Too much caffeine, blue light, or poor support can rob you of this phase. A properly supportive mattress helps reduce tossing and turning, giving your body the uninterrupted deep sleep it craves.
Lesson 4: Small Changes, Big Results
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Stick to a consistent bedtime (even weekends)
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Keep your bedroom between 16–19°C
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Reduce alcohol and caffeine intake
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Choose bedding that breathes and supports
Every small improvement compounds into better sleep quality — and better mornings.
At Haven, we believe in more than just selling mattresses — we believe in sleep education. Because when you understand the science of sleep, you make smarter choices about how you rest, recover, and recharge.
Ready to turn knowledge into better nights?
🛏️ Explore the Sleep Science Collection
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