What is the normal breathing rate in an adult man at rest?

The normal breathing rate for an adult man at rest is typically between 12 and 18 breaths per minute. This can vary from person to person and may be influenced by factors such as fitness level, activity, and health conditions. It is commonly referred to as the respiratory rate or ventilation rate. If an adult man's resting breathing rate falls outside this range consistently, it is advisable to consult a healthcare professional to rule out any underlying medical issues.