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Importance of Sleep

Sleep researchers discover that sleep is vital for learning and memory and that lack of sleep impacts our health, safety, and longevity.

Every sleep stage has its function, and we cycle between REM and non-REM sleep. Usually, rest starts from light sleep and slowly enters the deep sleep phase. This phase is called the non-rapid eye movement phase (NREM). When the body enters the rapid eye movement phase (REM), that is, dreaming, it completes a sleep cycle of about 90 to 120 minutes. Adults should have 7 to 9 hours of sleep a day, and there are usually 4 to 6 sleep cycles throughout the night.

Non-REM sleep helps repair the body’s cells and ensures we get enough rest to face the challenges in life the next day.

On the other hand, REM sleep helps us process the information we’ve learned and reinforced our memory and learning ability.

Therefore, good sleep can ensure that we are both physically and psychologically healthy to function optimally and enjoy stable moods.


Sleep Test


Do you snore loudly?


Do you often feel tired, fatigue or sleepy during day time?


Do you often experience insomnia?

These are the symptoms of sleep apnea.

For a quick check, please click here.

Sleep Analysis Report

Medical-grade wearable, convenient & economical

The Belun® Ring measures

  • Oxygen Saturation (SpO2)
  • Pulse Rate (PR)
  • Apnea Hypopnea Index (bAHI)
  • Sleep Stages : wake, REM, NREM
  • Autonomic Nervous System (ANS) Response
  • Motion

Belun® Ring

Put the ring on before sleep. A sleep report will be generated automatically in the morning, revealing your sleep apnea risk, sleep efficiency, and stress level.

The Belun® Ring helps you discover the quality of your sleep — at home, comfortably, by simply putting on your ring before bedtime. You will uncover the mysteries of:

  • Risk of sleep apnea
  • Sleep quality

The Belun® Ring equips its users with information that empowers them to change their daily habits — such as activities, exercise, alcohol intake, and medication — to improve their sleep health.

The Belun® Ring’s report also enables professionals to evaluate how users’ daytime activities affect sleep quality and to review sleep health holistically and scientifically in an unprecedented way in the marketplace.