Endogenous opioid neuropeptides produced by the brain that reduce pain perception and produce feelings of euphoria and well-being.
From 'endogenous' (from within) + 'morphine' (the painkiller). Literally 'the morphine within.' Discovered in the 1970s.
Endorphins are your brain's natural painkillers — they create that 'runner's high' and help you push through pain with a surge of feel-good relief.
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