Certified Nursing Assistants help care for physically or mentally ill, injured or disabled individuals in hospitals, nursing and personal care facilities and mental health settings. CNA’s perform much needed daily tasks such as serving meals, making beds and helping patients eat, dress and bathe. CNA’s work under the supervision of nurses. CNA’s take temperatures, pulse, respiration and blood pressure. They also help patients with range of motion exercises and assist patient with their daily living needs.