Why exercise makes you feel so good By Dr Laura Hart I was walking past a dance studio the other day and saw an advertising poster with an image of a woman working out hard, perspiration dripping down her face, concentrating on her squat. It had a caption that read Sweat is a river that runs through the soul. And it hit me. That is exactly the kind of mindset that allows me to enjoy exercise. When I think about how hard I’m working, how strong I’m getting, how pushing my body