How exercise helps people with autism: "Sensory perception is an extra burden for people with autism and causes them to engage in behaviors that upset them," says Dr. O'Connor, a professor of physical education. They do not have a social. John O'Connor, a professor of physical education at Montana State University, explains why. Swimming and running involve rhythmic movements that are similar to stereotyped behaviors that people with autism may be distracted by clapping their hands and walking on their toes in the same way. Researchers have learned how exercise can reduce repetitive behaviors, but this knowledge is often marginalized.