This type of apnea is characterized by having a physical obstruction of the airway, but the individual is still trying to breathe. Once the airway is open, one s breathing continues. The other type of sleep apnea is Central Sleep Apnea. In this condition the brain fails to send the signal to breathe. Once the oxygen level drops far enough, the person's body stimulates the breathing process.
Some individuals can also have what are called mixed apneas.
Mixed apneas have both obstructive and central sleep apnea events. Also, when you stop breathing, your pulse rate increases. A higher pulse rate means that your heart is beating faster and working harder. This is fine if you are exercising, but not when you are trying to sleep. Frequent choking and an elevated heart rate are not the most conducive elements for a restful nights sleep.