This is a physical therapist. Physical therapists help people that are injured or ill return to a normal and healthy life.
Physical therapists have to feel like their job is important because if they don't they won't be helping anyone
Physical Therapists are more likely to be healthy because their job is to help other people be healthy.
Physical therapists most likely work out and exercise more than a fast food worker or someone like them would because their most important task is to help people do certain exercises to get them healthy.