AI Sleep Coach

Sleep occurs in cycles of approximately 90 minutes, each consisting of distinct stages:

• Stage 1 (Light Sleep) — transition from wakefulness to sleep, easy to wake
• Stage 2 (Intermediate Sleep) — heart rate slows, body temperature drops
• Stage 3 (Deep Sleep) — restorative stage for physical recovery and immune function
• REM Sleep — rapid eye movement, dreaming occurs, essential for memory and learning

Waking up at the end of a complete cycle (rather than mid-cycle) helps you feel significantly more alert and refreshed. A typical night includes 4–6 complete cycles.

Several lifestyle and environmental factors can significantly impact your sleep quality:

• Caffeine — half-life of 5–6 hours; avoid after 2 PM for most people
• Screen time — blue light suppresses melatonin; stop 30–60 min before bed
• Room temperature — ideal range is 60–67°F (15–19°C) for most adults
• Inconsistent schedule — irregular bedtimes disrupt your circadian rhythm
• Stress and anxiety — racing thoughts activate your fight-or-flight response
• Alcohol — while it may help you fall asleep, it disrupts REM sleep
• Heavy meals — eating large meals close to bedtime can cause discomfort

• Maintain a consistent schedule — go to bed and wake up at the same time every day, including weekends
• Keep your room dark — use blackout curtains or an eye mask to block light
• Keep your room cool — a cooler temperature signals your body it's time to sleep
• Limit screens before bed — read a book, meditate, or journal instead
• Avoid caffeine after noon — or at least 6 hours before your bedtime
• Create a wind-down routine — 20–30 minutes of relaxing activities before bed
• Use your bed only for sleep — trains your brain to associate bed with sleep

Sleep needs vary by age. The National Sleep Foundation recommends:

While most sleep issues can be improved with better habits, some situations require professional help. Consult a sleep specialist if you experience:

• Chronic insomnia — difficulty sleeping 3+ nights per week for 3+ months
• Excessive daytime sleepiness — falling asleep during daily activities
• Loud snoring with breathing pauses — possible sign of sleep apnea
• Restless legs — uncomfortable sensations that prevent sleep
• Sleep paralysis — temporary inability to move upon falling asleep or waking
• Significant impact on daily life — sleep problems affecting work, mood, or relationships