Blood Oxygen Saturation refers to the percentage of oxygen-saturated hemoglobin in the blood compared to the total hemoglobin. It is an important measure of how well oxygen is being transported throughout the body. Normal levels typically range from 95% to 100%, indicating that the body is receiving adequate oxygen for its needs. Low Blood Oxygen Saturation can lead to symptoms like shortness of breath, confusion, or fatigue. It can be measured using a device called a pulse oximeter, which clips onto a finger or earlobe. Monitoring this level is crucial for individuals with respiratory or cardiovascular conditions.