Passionate feelings of love seem to be a powerful reliever of physical pain. Researchers at Stanford University had 15 students, each at the beginning of a passionately romantic relationship, look at pictures of their partner as a hot probe was applied to their palm.
Seeing the photo reduced the amount of self-reported intense pain the students were feeling by 12 percent. Viewing the image diminished self-reported moderate pain by 45 percent.
The study also involved a brain scan, which revealed this love-based pain relief triggers the same part of the brain that is affected when a person takes morphine or cocaine.