CIRCADIAN RHYTHM OPTIMIZER

Sleep Cycle & Alarm Optimizer 💤

Waking up in the middle of a 90-minute REM sleep cycle causes grogginess. Time your bedtimes and alarms to wake up feeling 100% refreshed.

What time do you need to wake up?

💡 Includes the standard 14-minute average latency to fall asleep.

Recommended Bedtimes to Feel Energized:

🔥 Optimal (9.0 hrs)

9:46 PM

6 Full REM Cycles

Wake up right at the end of cycle 6

⚡ Recommended (7.5 hrs)

11:16 PM

5 Full REM Cycles

Wake up right at the end of cycle 5

👍 Acceptable (6.0 hrs)

12:46 AM

4 Full REM Cycles

Wake up right at the end of cycle 4

⚠️ Low Energy (4.5 hrs)

2:16 AM

3 Full REM Cycles

Wake up right at the end of cycle 3

HOW IT WORKS & METHODOLOGY

UNDERSTANDING THE MATH, FORMULAS & CALCULATION ENGINE

90-Minute Ultradian Cycles

Human sleep progresses through NREM and REM stages in rhythmic 90-minute ultradian cycles.

Sleep Latency Buffer

We automatically factor in the standard 14-minute average time required to fall asleep.

Optimal Wakeup Windows

Calculates exact alarm times that allow you to wake up at the end of a cycle feeling fresh and energized.

FREQUENTLY ASKED QUESTIONS

EVERYTHING YOU NEED TO KNOW ABOUT THIS EXPERIMENT

Q1.Why do I feel groggy even after sleeping 8 hours?↓

Grogginess (sleep inertia) occurs when your alarm goes off during deep slow-wave sleep. Waking at the completion of a 90-minute sleep cycle lets your brain wake up naturally in light sleep.

Q2.How many sleep cycles do I need per night?↓

Most healthy adults function best on 5 to 6 complete cycles (7.5 to 9 hours of sleep per night). 4 cycles (6 hours) can work for short crunches but is not recommended long-term.

Q3.What is the optimal power nap duration?↓

A 20-minute power nap boosts alertness without entering slow-wave sleep. If you need deeper recovery, take a full 90-minute nap to complete one entire REM cycle.

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