Continuous Positive Airway Pressure is a therapy that uses a machine to help a person suffering with obstructive sleep apnea. It helps the person to breathe more easily during sleep. Continuous Positive Airway Pressure machine increases air pressure in your throat so that your airway doesnt collapse when you breathe in. It is most effective and safe way of treating obstructive sleep apnea, it is made up of an air pump that blows air under low pressure to which a mask is attached, CPAP helps in stopping the snoring. Continuous Positive Airway Pressure is a highly effective therapy, its efficacy is based on regular usage and therefore adherence to therapy is of major importance to find best results. Average use is about 5 to 6 h per night in most compliant patients.