The Science of Sleep Cycles

Our sleep calculator uses scientifically proven principles of sleep cycles and circadian rhythms to help you optimize your sleep schedule. Each sleep cycle lasts approximately 90 minutes, and most people need 4-6 complete cycles per night.

Natural Sleep-Wake Cycles

Your body's internal clock, or circadian rhythm, regulates your sleep-wake cycle. This natural process responds primarily to light and darkness in your environment, helping determine when you feel sleepy or alert.

Optimizing Your Schedule

Our calculator takes into account your current sleep patterns, lifestyle factors, and desired wake time to recommend an optimal bedtime that aligns with your natural sleep cycles and helps you wake up feeling refreshed.

Key Factors We Consider

• Current sleep schedule and patterns
• Desired wake time and sleep duration
• Sleep quality issues and challenges
• Lifestyle factors (caffeine, exercise, screen time)
• Natural light exposure
• Daily routines and habits