Two scientist came together to form the James-Lange theory of emotion. In their theory, they state that to feel an emotion, there must be an equivalent physiological arousal as a result of external events. In other words, they opined that in order to feel emotion, there must be bodily responses such as increased heart rate, chill down your spine, sweaty hands, or increasing breath speed.
When you exercise, your body releases chemicals called endorphins. These endorphins interact with the receptors in your brain that reduce your perception of pain. Endorphins also trigger a positive feeling in the body, similar to that of morphine. your welcome
