There are so many positives of breathing. Breathing detoxifies and releases toxins by exhaling oxygen from your body that has been converted to carbon dioxide. It releases mental tension by allowing more oxygen to flow into the body. It also relaxes the mind and body and increases thought clarity. For parts of the body that feels tense or tight, try to concentrate your breathing into those places. It also helps build the immune system by providing more oxygen that replenishes your blood. Most importantly, because it keeps you alive.