For people who don’t exercise very much, intense exercise may bring a lot of discomfort, but they will definitely feel an unexpected sense of excitement. Usually after a long exercise, people will feel relaxed physically and happy mentally. Why is this happening? Magical [cannabinoid] Scientists have long believed that people’s pleasure after running is due to endorphins and related hormones released by the body, which relieve pain and activate the reward system in the brain. However, researchers recently found that endorphins cannot pass through the blood-brain barrier (it blocks the brain and other parts of the body), so this must not be the reason for physical and mental pleasure after running. Scientists have discovered the cause of this phenomenon-a special Read More …