How to increase oxygen levels in the body?

Deep breathing alone doesn't significantly raise blood oxygen levels. Hyperventilation from over-breathing can decrease essential carbon dioxide (CO2), impairing oxygen delivery. Your body needs CO2 for efficient oxygen release to tissues, according to the Bohr effect. Excess oxygen can be harmful, causing issues like seizures or oxidation. Techniques like slow, diaphragmatic breathing and nasal breathing can optimize oxygen uptake without the risks of hyperventilation. Consult a medical professional for chronic symptoms.