Sleep is not a continuous, passive state. It consists of 4–5 cycles per night, each lasting about 90–120 minutes. Each cycle includes different sleep stages, which play a unique role in the regeneration of the body and the brain.

A good understanding of these phases explains why we wake up feeling tired even after 8 hours of sleep—or why a high-quality layer It can make a difference.

The 4 Basic Stages of Sleep

  1. NREM Stage 1 – Light Sleep (5–10% of total sleep)
    • Transitional phase: from wakefulness to sleep
    • Muscles relax; breathing and heart rate slow down
    • We wake up easily from noise or movement
    • Problem: Old mattresses with sagging and spring noise disrupt this phase
  2. NREM Stage 2 – Light Sleep (45–551 TP3T of sleep)
    • The biggest moment
    • The brain «processes» the day, consolidates memories, and learns
    • Movement and body temperature decrease
    • Why it's important: You need stability and quiet—a mattress that doesn't transfer motion (e.g., Vispring or Simmons Beautyrest) helps a lot
  3. NREM Stage 3 – Deep Sleep / Slow-Wave Sleep (10–25%)
    • The most rejuvenating phase
    • Tissue repair, immune system support, growth hormone release
    • It's very hard to wake up—and when we do, we feel dizzy
    • Key: You need proper support and breathability—mattresses made of natural materials (wool, Talalay latex) such as Vispring, Treca Paris & Kluft help you stay in this phase
  4. REM Sleep – Rapid Eye Movement Sleep (20–25%)
    • An Active Brain – Dreams, Emotional Processing, Creativity
    • Muscles «freeze» (so we don’t move in our dreams)
    • Problem: Disruptions caused by an uncomfortable mattress or heat cut short REM sleep → less emotional balance and creativity the next day

Why a Premium Mattress Helps with Sleep Stages

A good mattress doesn't let you «sink in,» doesn't make you feel hot, doesn't transfer motion, and doesn't put pressure on specific parts of your body.

Conclusion

Ο Your sleep consists of phases each of which has its own significance. If you wake up feeling tired, stiff, or «groggy,» your mattress is most likely disrupting some of these phases.

A handmade, premium mattress isn't a luxury—it's a tool to help you sleep correctly and wake up strong.

Come to the our showroom in the southern suburbs Try out mattresses from Vispring, Treca Paris, Kluft, Aireloom, and Simmons. You’ll immediately feel how a good mattress changes your sleep cycles—and your life. Find us on Google Maps

Schedule an appointment now Because you deserve a perfect night's sleep.