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Science

hlthe2b

(110,963 posts)

6. None of us would be here if not for norepinephrine (sympathetic nervous system activation--Fight or Flight)

Reply to mr715 (Original post)

Tue May 20, 2025, 12:52 PM

May 20

(and yes, epinephrine/adrenaline is part of that.

But, this has been a dangerous world from inception, so our ancestors HAD to be able to respond to threats.

Personally, those that let me sleep after a long shift: GABA, adenosine, serotonin (and others)... are those for which I am particularly grateful today.