Jen Martin was halfway through running a race in Melbourne when she was so overwhelmed by sheer joy that it brought her to tears. "I pretty much started crying because I just felt so gloriously happy ...

After a nice long bout of aerobic exercise, some people experience what’s known as a “runner’s high”: a feeling of euphoria coupled with reduced anxiety and a lessened ability to feel pain. For ...

Throughout the world, amateurs, experts and the media agree that prolonged jogging raises people's spirits. And many believe that the body's own opioids, so called endorphins, are the cause of this.