Hemoglobin oxygen affinity is the continuous relationship between hemoglobin oxygen saturation and oxygen tension. There are several important factors that affect the affinity of hemoglobin to oxygen. They are pH, temperature, carbon dioxide, 2,3-BPG, and carbon monoxide. Temperature affects the affinity, or binding strength, of hemoglobin for oxygen. Hemoglobin is found in red blood cells and carries oxygen efficiently from the lungs to the tissues in the body and hemoglobin shows a low affinity towards oxygen. This has a lot of impact on our body and has helped us in adapting efficiently.