Answer:
Cardiovascular:relating to the heart and blood vessels.
Metabolism:the chemical processes that occur within a living organism in order to maintain life.
Endorphins:any of a group of hormones secreted within the brain and nervous system and having a number of physiological functions. They are peptides which activate the body's opiate receptors, causing an analgesic effect.
Hypertension:any of a group of hormones secreted within the brain and nervous system and having a number of physiological functions. They are peptides which activate the body's opiate receptors, causing an analgesic effect.