Respiratory rate refers to the number of breaths a person takes in one minute. It is an important vital sign that helps assess a person's respiratory health. A normal respiratory rate for adults typically ranges from 12 to 20 breaths per minute, while children may have higher rates. Measuring respiratory rate can provide insights into various health conditions. For instance, an increased rate may indicate exercise, anxiety, or respiratory illness, while a decreased rate could suggest sleep apnea or respiratory depression. Monitoring this rate is essential in clinical settings to ensure proper patient care.