Have you had to visit the emergency room or stay in a hospital? If so, then you or a family member have had a registered nurse care for them. I work in the hospital as a registered nurse providing care for people. I specialize in working with people who have strokes and people after surgery. As such I work with a wide variety of illnesses and injuries. I use the sciences of anatomy, physiology, biology along with basic math to care for people. Another perk is getting to help people.