<span>Endorphin. Endorphin are pepetide hormones secreted by the central nervous system and the pituitary gland. They inhibit the transmission of pain signals; they also produce a feeling of euphoria very similar to the ones produced by other opioids. Its 1 production is usually triggered by various human activities although they are produced in response to pain. Carrying out frequent exercise usually stimulates the release of beta-endorphin in the human brain known as runner's high. This is the probably the reason Mobombi could finish the race pain free.</span>
Differences between<span> a </span>physical and chemical change<span> in matter or substances</span>
