endorphin

/en-dawr-fin/US // ɛnˈdɔr fɪn //UK // (ɛnˈdɔːfɪn) //

内啡肽,内啡呔,脑内啡

Definitions

n.名词 noun

1
- : any of a group of peptides occurring in the brain and other tissues of vertebrates, and resembling opiates, that react with the brain's opiate receptors to raise the pain threshold.

Exercise releases endorphins, which can create brain activity that keeps some awake.
Showing kindness to others is also an easy way to release healthy endorphins.
So, when endorphins are circulating, they are essentially natural opioids.
There are various theories for why this happens, including the release of pain-blocking brain chemicals such as endorphins.
It was almost like these betting machines or these games online that give you a little endorphin hit each time.
I woke disoriented and crabby, without my customary morning jolt of endorphin.