What Yiannis Kouros says, is that when he is running for a long enough time his body and mind separate. Other runners have experienced this same type of thing. Generally, most people claim that a runner's high is when the mind takes over the body and the unconscious leads the mind. Yet, there are many more aspects that people attribute to runner's high. Most people claim that runners high is a feeling of invincibility and superior performance that can be brought on by certain environmental surroundings.
Environmental stimuli affects everybody in positive and negative ways.
Divers swimming in clear, warm water seem to experience pleasant sensations, while those in dark, cold water seem to encounter panic, fear, anxiety, and depression.5 These feelings can also be associated with running. When running on a beautiful, sunny day in a place where the scenery pleases the runner, he or she is more likely to experience happiness or even a high, versus when running on a cold, rainy day, along dark, unknown scenery. When a runner is able to take in the scenery that is around them and almost become one with it, then the run will be enhanced. When looking at the different aspects of runner's high, the environmental surroundings play an important role. While their are many different feelings that are supposedly associated with runners high, there is still much controversy surrounding whether or not there is such a thing.