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Shared February 21, 2026
Ever wake up a few minutes before your alarm goes off?
That’s not random.
Your body follows an internal clock called your circadian rhythm.
Before your alarm rings, your brain slowly increases alertness — heart rate rises slightly, hormones shift, and your body prepares to wake up.
It’s not luck.
It’s biology.
#SleepScience
#CircadianRhythm
#BrainFacts
#BodyFacts
#USATikTok
#MedicalAnimation
#DidYouKnow
#ScienceExplained
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