Endorphins

Endorphins are hormones and neuro-signalling molecules that function as painkillers. They inhibit the transmission of pain signals in the central nervous system by binding to opioid receptors (the body’s natural morphine).

Endorphins & dopamine are often confused because each one is a chemical that makes you happy in the broad sense of the term. However, they are in some ways related because, when endorphins bind to receptors of the central nervous system, dopamine (the pleasure hormone) is released.