An icon in the shape of a lightning bolt. Impact Link Feeling good after exercising is caused by the release of hormones called endorphins. But you don't have to hit the gym to get the same rush.

High-intensity interval training (HIIT) triggers endorphin release in the brain. Source: Courtesy of Turku PET Centre Researchers in Finland have discovered that exercise-induced endorphin release in ...

Many people have experienced reductions in stress, pain and anxiety and sometimes even euphoria after exercise. What's behind this so-called "runner's high?" New research on the neuroscience of ...