The normal resting respiratory rate for an adult at rest is typically between 12 and 20 breaths per minute. However, the exact range can vary depending on factors such as age, overall health, and level of physical activity. Infants and children may have higher respiratory rates compared to adults, with newborns having a normal range of 30 to 60 breaths per minute. It’s important to note that any significant deviation from a person’s normal respiratory rate, especially if accompanied by other symptoms such as shortness of breath, should be evaluated by a medical professional.