🧠 Why It Happens: The Brain’s "False Alarm"
As you fall asleep:
Muscle tone decreases (normal for sleep)
Brain activity shifts from alertness to sleep rhythms
The reticular activating system (RAS)—your brain’s "arousal center"—can misinterpret this relaxation as "falling" or "system failure."
Motor cortex fires a protective jerk to "catch" you
🌙 Evolutionary theory: Early humans sleeping in trees may have needed this reflex to prevent falls.
⚠️ Common Triggers (And How to Reduce Them)
Trigger
Why It Increases Jerks
Fix
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