🌙 What Science Says: Your Body’s Natural Rhythm
Your sleep isn’t a flat line—it’s a series of 90–120-minute cycles, shifting between deep sleep, light sleep, and REM (rapid eye movement) dreaming.
By 3–5 AM, you’re typically in your final REM cycle—a phase marked by:
Increased brain activity
Higher cortisol (stress hormone) levels
Lighter sleep → easier to wake up
But if you stay awake, it’s often due to:
1. Circadian Rhythm Shifts
As we age, our internal clock shifts earlier. Many adults naturally wake before dawn—even without external triggers.
2. Blood Sugar Drops
Overnight fasting can cause low blood sugar, triggering adrenaline release → sudden alertness.
3. Stress & Anxiety:
