4. Endorphins: Natural Painkillers
Endorphins are the body’s own natural painkillers, released in response to pain or stress to provide relief and enhance pleasure. Activities like vigorous exercise, hearty laughter, or eating spicy foods can trigger an endorphin rush, lifting mood and reducing discomfort. Often compared to morphine, endorphins bind to opioid receptors in the brain, producing feelings of euphoria and well-being without the risks of addiction. For more on how endorphins influence happiness, visit WebMD.