Back when yoga was for weirdos and acupuncture was woo-woo, this woman was sneaking around her lead professor's lab trying to figure out why our minds tell us things FEEL good. And he thought that was going to be a waste of time. Except she discovered how we perceive endorphins. Oh yeah - and did you know we have neurotransmitters and receptors in our stomachs? Gives a whole new sense to the phrase, "gut feeling."