Breathing techniques significantly influence exercise intensity by affecting oxygen delivery and carbon dioxide elimination. Proper breathing ensures that the muscles receive adequate oxygen for energy production during physical activity. For instance, a controlled diaphragmatic breathing pattern can enhance athletic performance, enabling longer endurance and improved signal communication to the brain. This efficiency often allows for a higher intensity of exercise without premature fatigue. Conversely, shallow or irregular breathing can limit performance and increase feelings of exertion, which may reduce overall exercise intensity.